The Fishing Website : Discussion Forums : Deepish water fish finder. https://www.fishing.net.nz/forum/ Mon, 08 Jun 2026 21:48:29 +0000 Fri, 27 Aug 2021 20:00:26 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=135790 <![CDATA[The Fishing Website : Discussion Forums]]> https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ <![CDATA[Deepish water fish finder. : I have a Lowrance gen 3 with a...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1813744&title=deepish-water-fish-finder#1813744 Author: Alan L
Subject: 135790
Posted: 27 Aug 2021 at 8:00pm

I have a Lowrance gen 3 with a P66. 300m+ is no problem finding fish. I set this unit up specifically for deep water fishing. 4-500m is do-able.
Alan
]]> Fri, 27 Aug 2021 20:00:26 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1813744&title=deepish-water-fish-finder#1813744 <![CDATA[Deepish water fish finder. : I would advise against in hull...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812600&title=deepish-water-fish-finder#1812600 Author: kimber7wsm
Subject: 135790
Posted: 14 Aug 2021 at 7:51am

I would advise against in hull strongly. I've got one and it doesn't read a speed due to the boundary layer of air under the hull. It was recommended by a leading installer and against my judgement I did what they said. 

If you're prepared to lift the budget you gave of $2000 to $3500-4000 (it would be 7inch at that price), I would absolutely recommend the 1kw 175 thru hull, otherwise the TM.

One feature I would recommend is sonar history scroll back. It's awesome when you are sounding around, as you can scroll back to find the best bit of sign you went over, mark it and then go back to that spot.
With the Simrad/Lowrance (that's all I know about), you can have 175M and the 3in1 side/down scan transducers connected at once. 

Maybe consider looking on Trademe for a unit to help keep price down. I wouldn't recommend a 2nd hand transducer just in case it's been left on out of water and the performance has been degraded.
]]> Sat, 14 Aug 2021 07:51:57 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812600&title=deepish-water-fish-finder#1812600 <![CDATA[Deepish water fish finder. : Buy the best tech you can afford,...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812578&title=deepish-water-fish-finder#1812578 Author: NZTurtle
Subject: 135790
Posted: 13 Aug 2021 at 11:48am

Buy the best tech you can afford, with upgradeablility for transducers. You might be surprised how well you can position/tune a lower powered transducer.
If you own it for 10 years, it will pay itself back based on finding fish (thats finding, not catching, as thats up to you).
Side scan or the equivalent is great, even if impacted by an outboard leg etc. Note that you used to be able to mount 2, one on each side to fix this.
You can also go with US version of sliding leg to change its position depending on your speed (make sure it locks though as a transducer dragging on the road is not a great look - personal experince).

]]> Fri, 13 Aug 2021 11:48:50 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812578&title=deepish-water-fish-finder#1812578 <![CDATA[Deepish water fish finder. : I&#039;ve been looking at thru...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812564&title=deepish-water-fish-finder#1812564 Author: OneWayTraffic
Subject: 135790
Posted: 12 Aug 2021 at 8:41pm

I've been looking at thru hulls where I'd drill a hole. I don't think that they do side view with my deadrise. I prefer them to inhulls (where I need to remove the wooden core, fit a pure glass patch and place the transducer inside the solid glass.) Thru hulls also do temperature. 

There are no strakes or protrusions underneath except the central skeg and side sprayrails. That will help either a thru or transom mount. 

Biggest reason to go transom are side view and price. 


]]> Thu, 12 Aug 2021 20:41:50 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812564&title=deepish-water-fish-finder#1812564 <![CDATA[Deepish water fish finder. : I agree with Legacy. Given your...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812541&title=deepish-water-fish-finder#1812541 Author: Fish Addict
Subject: 135790
Posted: 12 Aug 2021 at 3:12pm

I agree with Legacy.  Given your situation where you are building the boat I would give serious thought to installing an in hull transducer rather than a transom mounted transducer.  The correct placement of transom mounted transducers appears to be a bit of a 'black art'.  The key to getting a good reading at speed seems to be placing the transducer in a position where it is not affected by turbulence or aeration.  Some hull designs seem to be better than others.     ]]> Thu, 12 Aug 2021 15:12:20 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812541&title=deepish-water-fish-finder#1812541 <![CDATA[Deepish water fish finder. : I&#039;m wondering about that....]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812537&title=deepish-water-fish-finder#1812537 Author: OneWayTraffic
Subject: 135790
Posted: 12 Aug 2021 at 12:53pm

I'm wondering about that. Easier to spend up while I'm building the boat and keep it as is for ten years rather than go spending after I've called it finished. ]]> Thu, 12 Aug 2021 12:53:11 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812537&title=deepish-water-fish-finder#1812537 <![CDATA[Deepish water fish finder. : OneWayTraffic wrote: Legacy...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812523&title=deepish-water-fish-finder#1812523 Author: Legacy
Subject: 135790
Posted: 12 Aug 2021 at 7:08am

Originally posted by OneWayTraffic OneWayTraffic wrote:

Originally posted by Legacy Legacy wrote:

You might look at a head unit that is 1 kw comparable and then transom mount a budget 600w transducer until you can afford a 1kw ‘ducer.
Garmin and Furuno both have served me well.


Thought about that but I can buy whatever I want now. I can wait for a little bit longer in the build before I drop any money but I want to sort out options now so I can jump on deals as I see them.

I could in theory drop 4K on a sounder but I don’t want to over spend on a 5.3m boat.

Fish addict: The search function on this site bites. I’ll try a custom google search. Good to know though. If I can get bottom at 500 that’s something.


Well I’d look at a TM185m or the in Hull equivalent, great transducer to around 500m.
]]> Thu, 12 Aug 2021 07:08:51 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812523&title=deepish-water-fish-finder#1812523 <![CDATA[Deepish water fish finder. : Joker wrote:I have a Garmin...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812517&title=deepish-water-fish-finder#1812517 Author: OneWayTraffic
Subject: 135790
Posted: 11 Aug 2021 at 9:49pm

Originally posted by Joker Joker wrote:

I have a Garmin 7412 with a 600W GT51 transducer that punches well above its weight both in the shallows and deep water. I have found fish at 430m and have no problems at all at 300m.

Here are Puka, Bass, Bluenose & Gemfish all caught at 369m

  

Nice, but a little more than I am hoping to pay? Bay marine have a Striker plus with the GT52 for under 1k, but not as capable. It looks like their pure fishfinders are 500W only. 

]]> Wed, 11 Aug 2021 21:49:24 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812517&title=deepish-water-fish-finder#1812517 <![CDATA[Deepish water fish finder. : Brilliant ]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812513&title=deepish-water-fish-finder#1812513 Author: huntfish
Subject: 135790
Posted: 11 Aug 2021 at 8:35pm

Brilliant]]> Wed, 11 Aug 2021 20:35:29 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812513&title=deepish-water-fish-finder#1812513 <![CDATA[Deepish water fish finder. : I have a Garmin 7412 with a 600W...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812512&title=deepish-water-fish-finder#1812512 Author: Joker
Subject: 135790
Posted: 11 Aug 2021 at 8:27pm

I have a Garmin 7412 with a 600W GT51 transducer that punches well above its weight both in the shallows and deep water. I have found fish at 430m and have no problems at all at 300m.

Here are Puka, Bass, Bluenose & Gemfish all caught at 369m

  ]]> Wed, 11 Aug 2021 20:27:30 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=135790&PID=1812512&title=deepish-water-fish-finder#1812512