Meatbucket- Can't tell where you live from your profile. But if you have any interest in ice fishing in the winter, then you should consider getting a "portable" fishfinder setup. These include a battery, transducer, kayak-sized display unit and some cabling, all packed inside a waterproof bag. You can pull it apart and mount all the electronics in your kayak during the summer, and then yank it out of the kayak, re-assemble and use it for ice fishing in the winter. Just a thought...
Thanks I live in Virginia between Wash DC and Richmond. I don't do a lot of ice fishing but I am considering a FF/GPS for a simular reason as your post. See I have a Jet Boat that I have been Smallmoth fishing from for about 12 years now and my FF has died. So If I get a decent FF/GPS for the Kayak I would like to get a second transducer and mount for the Jet Boat and just buy one untit to move between the two boats.
I was trying to decide between the Lowrance ELITE-5 HD or the Hummingbird 587ci. Does any one have a preference and if so what would that be?