I have an older model kayak, an Ocean Prowler Trident 11. I'd like to mount a fish finder (my first) inside the hull with a shoot-through-hull transducer.

According to instructions found on the Net, the transducer has to be located on a flat section of the bottom.

That's my problem. No part of my kayak's bottom is truly flat. At the location where I'd like to place it, it is the most near to being flat. But it still has a very shallow Vee profile; no more than 5 deg, but possibly a little less.

Right now I'm stumped. Anyone have any comments or suggestions?

The only thing I can think of is to forget about placing the transducer inside the hull, but this would be a last resort.