“I assume that we are not talking about old style dacron, cotton, flax or wool sails for a N6.0”
The main in one of mylar-based sails. So far I had no problem with that main but I had to replace see through window in jib. The window just cracked like glass – it was brittle to the point that you could break it just by twisting it. But it was not the original sail that came with the boat. The original jib is still in good shape and it is stored in the same box.

So what are the other solutions to store sails on the beach. I really do not like the idea of carrying those sails with me every time I go sailing. They take too much space in the car.