Kevlar is photo-sensitive and can experience brakedown of the fibers over time. It's best to store any clear Kevlar canoe in the shade when not in use. Painted canoes are quite UV resistant. A. No, they use an automotive-quality paint. Gel coat is not flexible enough to stay bonded to the hull during an impact with an obstacle.
Good paint does and can be touched up much more easily than gel coat.
I've heard that Kevlar canoes are tippy. A. First of all, the cloth that is used to make the canoe, be it Kevlar, Duralite, fiberglass, fluff weave, etc. This is a common misconception. However, the hull shape of the canoe has everything to do with stability. Racing hulls are made for speed and can be tippy and fast.