[Sabreman]

You can use a mild dish or clothing detergent with a soft scrub brush. Just hang two corners from a tree or house and hose off. There is only one way to fold a sail for storage and that is to flake it accordion style from the foot. Then roll the sail so it will fit in the bag. Make sure the sail is totally dry before flaking and bagging.

 

[Sabreman]

When I remove the sail for winter storage, I flake it. If I remove it for any other reason, it gets flaked. I can't think of a reason to do otherwise. During the normal season, it stays on the furler.

Don't stuff a sail in a bag, it creases it in more places than absolutely necessary and contributes to it's aging.