If you leave a kayak tied up tight and its hot out it will warp. The plastic has a memmory and will come back however.
As to UV damage. They will last longer than 3-4 years however the UV will break down and eventually destroy the kayak. You have 3 choices.
1) Do nothing.
2) Keep the kayak out of sun whenever possible.
3) Treat the kayak with a UV protectant which is basically a sunblock for your kayak. We carry 303 protectant and its designed to do exactly this. Prevent sun damage.
As to UV damage. They will last longer than 3-4 years however the UV will break down and eventually destroy the kayak. You have 3 choices.
1) Do nothing.
2) Keep the kayak out of sun whenever possible.
3) Treat the kayak with a UV protectant which is basically a sunblock for your kayak. We carry 303 protectant and its designed to do exactly this. Prevent sun damage.