I'm not too familiar with the requirements for a transducer and whatnot, but when you say that the setup you have sits too far below the water line, how does that affect it?
The sonar features works perfectly with the
present transducer depth. Better too deep than
too shallow. But I'm confident the side scan
will continue to work well if I move it up two
inches or so.
The above setup was just a quick protoype
to learn if the HB798 SI would work well in
a kayak and if the stern mount would be the
best location for me. Both are true.
...the best is Scotts video with the anal bung, great bit of kit and there is no large flat like HsvToolFool has with his set up causing gurgle etc
The bung mount is very cool, but it's basically
the same setup as mine. Incorporating the stock
transducer plate was the quickest way I had to
get the job done. I wanted to play with my new
toy! I could have eliminated the plate by making
a more complex acrylic adapter rod. No bigee.
The metal bung mount shares the same drawback
as my the stern mount prototype: the transducer
can't be lowered or raised from the seat. When
launching, I must lock down the RAM before
entering the kayak, rotate the kayak so the stern
is in deeper water and the transducer is clear,
then enter the kayak. The process is reversed
when beaching. It's a minor nuisance, but I hope
to develop a raise/lower cable that works like the
Hobie rudder mechanism.