yes, do it.

Depending on where you fish, you may find the free C-map genesis charts provide coverage that is adequate for your area.  I used these in my lowrance HDI unit on the kayak for the rotorua lakes

Thanks for the replies, really helpful

I will start with the freebie c-maps, thanks for the link
My main areas for fishing in my yak is around inner waitemata to rangi light, also around cornwallis on the manukau, the later only 15mins drive from home

Probably at some stage I might end up getting navionics, but not too sure which would be compatible for my unit, either gold or platinum
At the moment, my low & slow bbq fetish is chewing up spare $$$

Would navionics merge saved waypoints into its maps
When I bought my 2nd hand kayak, it came with the f/f gps unit & 100+ waypoints on it
For viewing & planing at home, can these waypoints be viewed on a marine map on your laptop

cheers

I checked out c-maps, the freebie was very limiting for the areas that I wanted to view

Ended up purchasing navionics + , the updated version of the gold card, which now does community edits & sonar charts, to me, its money well spent
My Elite 7HDI came without any maps, so at least now, I am able to see the drop offs & contours of the bottom etc

What software do you guys use to view your saved way points & navionics together on a pc.

I’m not sure if this would work well on a kayak.......but when our chart plotter recently died I went and bought a cheap tablet ($140) that had gps built in- that means you don’t need SIM card or wifi, mobile data etc. I loaded navionics on it - I think it’s about $30? Bought a protective case and we’re good. Love it