Adam, I looked at a site abt kayak rigging you made a while back, I think you're paddling wood. That would eliminate firing the tranny thru the hull like tupperware. RAM makes a nice bracket for putting the sonar unit on the deck, check them out. I thought the Garmin 240 was a good unit but I'm waiting to see how Joey makes out with a sideshooting unit he's installing, I'm sure he'll tell you about it. I think side shooters make sense for most of the water I fish.