I use two different fishing kayaks. One for long distance fishing, and one for easier more comfortable fishing. The problem I have is that I only have one fish finder/GPS unit .
I could of course purchase a second transducer, but this can be very costly depending which unit you have, so realistically speaking that's not an option.
The brand of kayak I use (Wilderness Systems) has a gear track moulded and fitted as standard giving me options right from the start.
One of the yaks has a removable Flexpod which carries the fish finder unit, battery, and transducer all in one which keeps the unit and plugs dry and free from corrosion which is a massive plus, but my second kayak does not .
The mount comes with two base platforms in the packet, so I took one base unit and mounted it to my WS Tarpon 160 and the other to the WS Flexpod.