I believe the area I mounted my fish finder is ideal for how I plan to use it. It doesn’t interfere with my rider vision or placing my coffee mug. I bought a cheap used one online for $80. I used a RAM system to mount it to my siezmik door frame and plan to keep this mounted there all winter. The display can be removed in 10 seconds while leaving everything else in place.
The transducer cord is about 15’ long and you can just throw it in a hole outside the door with cord being held around a cord spoil mounted to the pioneer. There is a 1/2” gap at the bottom of the door, so you can just close the door and fish out the window.
I also use a portable lowrance elite 5 gps w/ice pack when I want to bounce around on foot. I hope this helps and am genuinely interested in seeing what systems other people are using.

Cheers!