I've got a Perception Prism. Unfortunately, I don't use it as much as I should since I bought a power boat. I keep my kayak stored under the shade of a tree. Occasionally, I treat it with Armoral and it seems to be in fine shape so far.
It's a sweet kayak. I've got it rigged up with and anchor line, rod holder and a bucket in the back hatch for live bait.
All this talk makes me want to take it out again! Should be a nice weekend for it too!