Tuna tubes yes or no?

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    Posted: 16 Jul 2025 at 8:34pm
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So, who has them and how much do you actually use them. Is it a handy rubbish bin? Is the reality different to the idea and in hindsight would you bother again. This is assuming you have a good live bait tank and not an either-or question.

Fish mainly off Auckland's west coast. Got a bit of a taste last season and maybe have the bugEmbarrassed. Boat is heading to boat builder soon for some alterations (alloy). Was looking at the job list thinking well while it's there........

Was thinking about one or two 6-inch tubes built into the transom, feed by Rule 1100 gph pumps. Overflow feeding live bait tank. 
Really like the idea of just one tube, it means one pump to feed both tube and tank, and a lot less clutter out the back. 
Thoughts? 

THERE ARE TWO KINDS OF FISHERMAN, THOSE WHO FISH FOR SPORT AND THOSE THAT CATCH SOMETHING.
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Post Options Post Options   Likes (0) Likes(0)   Quote smudge Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jul 2025 at 8:14am
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As you know I'm not really a game fisherman but that wont hold me back from commenting Big smile

Tuna tubas are great if you actually have a live bait to go in them and you have a rod set up for live a live bait ready to go and you happen upon a workup. Then you need to decide whether to put out a tuna, kahawai or Jack mackerel (which may or may not be in the live bait tank all ready to go).

When marlin are working hard out rounding up skippies that is when a tuna tube is worth while.

Bear in mind this is all based on what I've heard others talking about, I'm lucky enough to hear a lot of this stuff from my involvement in the fishing club, so these are my thoughts only.

If you're really serious about game fishing then tuna tubes would be a good thing, I'm sure of that. I'm not sure I would use the overflow from the tubes to supply a live bait tank but someone with experience may be able to answer that one.

I have a tuna tube, I have used it but mostly it's used for thawing out a whole fish for bait.
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I do not have tuna tubes so may not be the right person to answer as well. Reasons I haven't are:
I haven't missed them.
Small boat (6m). limited transom and pickup points
For tubes to work first you have to catch a suitably sized skippy, getting these lately on East coast has been a challenge in itself. Then you will need to decide to rig it and have it ready to deploy or wait till you think you've found "the spot" to slow troll one or two and then rig them and hope you don't kill them. I can count the number of times I've seen a marlin behind the boat without first getting a bite on my hands so the chances of deploying a skippy (if I had one) are next to none. Sure up higher you can see more but trailer boats na. 
There is an art to get a good hookup on a big bait. Yes I have caught one on a trolled skippy in the short amount of times I've done it so certainly don't rule it out as an option. 
Skippys are not a normal food source. Yes I know they do eat them.
As you said you need a good volume pump and make sure there is no air in the intake as I understand this kills them. They need to be long enough to keep the tails wet too I've been told. It is also a drain on the battery and I'm already running enough stuff. 
I do have a live bait tank. I hate going wide without live baits even though I hardly use them and just take them for a round trip 90% of the time. 
Ask yourself. Can I retro fit them later if needed? If I fit them and don't use them will having them there be a pain? Can I remove them easily/cleanly? My advice as you are just starting the addiction skip it for now (pun intended). Wait and see what others here that actually have them say. Not sure how to work filling the live bait tank with the overflow either.  
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Post Options Post Options   Likes (1) Likes(1)   Quote Grunta Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 2025 at 12:49pm
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Always handy to have options so if you're planning on spending some time on the water then I'd be seriously considering it. Throwing a skippy into a school of his mates will often pay dividends and notwithstanding all the good points noted earlier in this thread, probably makes it worthwhile. The option of building them in or just doing a retro-fir add-on is probably worth a look. Jarred and the guys at Hi-Tech plastics make some good products and that includes Tuna Tubes and that would be a more cost-effective solution I'd have thought. I'd be using dedicated pumps.
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Post Options Post Options   Likes (1) Likes(1)   Quote Alan L Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 2025 at 5:43pm
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I will send you a pic of mine - I have an optional 2. 1 is always set up. Made out of plumbing bits. Cost about $100 each.
Had a tuna in the tube a few days ago for over half hr til I rigged it. Work just fine. I simply have them (1) there anyway - no reason not to. If I have a plan that may require them, then I fit the 2nd one up before hand - 5 mins.
Will send some pics tomorrow.
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There you go Got_Ya,. That's some great advice.
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It's on my list to install. I have had a marlin in the gear for 15 minutes without a bite. I would have given anything for a live bait....

Just because they are called tuna tubes, doesn't mean you can only put tuna in them. Kahawai and jack Mac's go good too. I find tubes (on Mates boats) are good for a having a fish ready. I don't like have a rigged bait in the tank, I am always very nervous the lid is going to nick the leader.

Down side is you need an extra rod. When you only have 2, that's a problem but we'll get there one day.
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A single tube is worth way more than none. Two tubes ain't worth double one tube.
It depends how you want to fish. You can do without them for sure. But if you are interested in bait fishing, then at least 1 tube is invaluable. It gives you several options  - a great example just given in the post above.
Another example would be when you find some skippy action. Put the first one in the tube. The 2nd one (while they are still biting) you rig and drop where you found it. That is the general live bait advice anyway. But you now have a spare one - depending what happens, and the skippy bite may go dead - you still have a spare bait. Or you may see some birds working further away and maybe a marlin jumping etc. You can put your livie, still rigged, in the tube and relocate. Waaay better than trying to drag it over 0.5k or whatever. Probably stuffed by then.
It just gives you some flexibility and versatility in terms of the options. And with my system they are sort of optional or deletable as required. the top part of the tube in mine simply detaches and I can store it in the boat and leave the bases in place. If I suddenly see a need for a tube I just slip the upper tube on the base.


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Originally posted by kimber7wsm kimber7wsm wrote:

It's on my list to install. I have had a marlin in the gear for 15 minutes without a bite. I would have given anything for a live bait....

Down side is you need an extra rod. When you only have 2, that's a problem but we'll get there one day.

The tuna tubes give you good versatility. I only fish 2 rods. Used to fish 5. Those days are over - the other 3 are resting. If I had others in the boat I would put a 3rd rod in. But 2 is generally enough - especially with the tube option. You can store your livie and rig it later at your leisure. No rush. You only need 1 rod then.
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Originally posted by kimber7wsm kimber7wsm wrote:

It's on my list to install. I have had a marlin in the gear for 15 minutes without a bite. I would have given anything for a live bait....


You don't need a live bait for that situation. What you can do is travel with some pre rigged frozen baits - Koheru, skippies etc. I nearly always take some rigged frozen baits with me. They don't mind frozen. But that is the time to chuck something/anything with a hook in it, over the back.
I once was bottom fishing in 3-400m and pulled up a couple of smaller fish. Next thing I see 2 mahi swim by - obviously attracted by the fish. I was only set up for bottom fishing but had 2 frozen rigged skippy baits in the bin. I quickly clipped one on and threw it over and motored slowly off. bam. Mahi on. Wasn't slightly bothered it was an ice block. Time he figured that out was too late. I put him in the bin and chucked the 2nd bait - there was a mate somewhere. Took a couple of minutes and had that one on too. Unfortunately it fell off. But it makes the point that having some rigged frozen baits in the boat is a good plan B.
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Good looking setup Alan. Thanks for that. Think if I had one it would be used for large KY more than Skips, some days out west all you can find are these horse KY that really need a bit more space than the average trailer boat tank set up. One or two in the tank and another rigged in the tube sounds like a good idea.
Last year by the time of the Counties Classic in early March the fish seemed to be getting very lure shy, with most success being those who used live baits. While I'm not that into comps I pay attention to the results as it's a very good snapshot in time about what works. I guess even one tube gives you options and that's always a good thing.
No comments about using a 6-inch tube vs 8-inch? My thinking was a 1100 pump would handle that better than having to step up to a larger 17a Rule pump etc.
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The flow rate needs to go up with the square of the diameter. Double the diameter, you need 4 x the flow rate. So the diameter equation is pretty important. So I chose what was available in plumbing stuff to fit what I was likely to use for baits.
As for baits;
Live bait trumps dead bait, which trumps no bait.
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Post Options Post Options   Likes (1) Likes(1)   Quote Alan L Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jul 2025 at 8:02pm
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Don't recall the dia of these tubes now. Can measure tomorrow. Maybe 90 or 100mm. But I think a KY would fit in.
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115mm ID.
So I designed them to catch the bait I wanted - which is not necessarily the biggest bait you can get. But you don't need big bait to catch big fish. Yes, putting the biggest bait out will deter smaller fishes. But in practical terms that tube will hold a bait any amount big enough to catch a marlin (I didn't design it for that).
But I have caught  a marlin on a garfish bait - the nearest NZ equiv would be a piper.
I hooked a big sized marlin today on a skirt lure not much bigger than my thumb. It bypassed a similar lure 50% bigger to take this guy. That sized tube will hold plentybig  enough bait to catch a marlin. If you choose to uopscale then the proportions go with it - flow rate etc.
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Thanks Alan. Will talk to the boat builder and get his thoughts. At this stage heading towards one tube, 150mm diameter run off an 1100gpm Rule pump with some of the over-flow into a bait tank. Should handle smaller to medium sized Skippy's and bigger KY just fine. 

The 17a pumps draw 15.5A which is truck loads, while the 1100 only draws 3.3A. I'm not going to miss 3.3, but 15.5 along with electronics, radio etc.  That starts to add up quick. No point setting up tubes if your hesitant to turn them on because they are using potentially half your alternator output.
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Totally agree on the pump draw - especially if you are at idle revs - which I often am. Most units struggle to do 10A at idle.
I have a feeling the 1100gph will draw more than 3.3A. If not, good luck. I think thats what I have - will check. Will try and check the A, but I had something like 8 in mind.
Let you know if I find something. But 150mm is plenty big enough - you will fit any useful bait in there. An important feature is a cone in the bottom.  One tube is heaps better than none - if you want to bait fish. In general, it will be enough.
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Google says you are right with the 3.3A, it also gives a 4.7A. Can't figure that out. but it also says the 1100 gph actually tests out at 700. Think I am running 1100. If so for 150mm tube you will want to up that by a decent amount. Will check mine tomorrow.
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THERE ARE TWO KINDS OF FISHERMAN, THOSE WHO FISH FOR SPORT AND THOSE THAT CATCH SOMETHING.
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I think that 4.7A is probably the Fuse size.
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Says here that the 17a will run up to 3 eight-inch tubes, that's 1266 gph per tube.  I think 1100 for a 6-inch tube should work.  

THERE ARE TWO KINDS OF FISHERMAN, THOSE WHO FISH FOR SPORT AND THOSE THAT CATCH SOMETHING.
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