Hi all...

I spend two weeks at the beach in N. Carolina, and I store my sails each night in a sail bag with the boom attached. I just let the main drop down unto the bag, both main & jib are stored sort of 'accordion style'. I do leave 'em up until they are dry. If they get unusually wet from heavy ocean spray or large waves, I drag a hose down to the beach to rinse them off, then let dry & store. I leave the battens under tension until I go home.
When I get home, I set up the boat again, and give the sails and everything else a thorough rinsing with a hose, cleaning items as needed. I stand on my deck to get the top of the main sail.
I sometimes go lake sailing, but sails getting wet has rarely been a problem on lakes--instead it is getting the oily residue (from all the motorboats) off the hulls and rudders.
Between sailing events, I store the main (off the boom) & jib accordion style in their bag, along with the boom, tiller, tramp, etc. in a canvas sling that hangs from the joists in my basement.
My Hobie is almost 30 years old with the original sails, and except for a few rust spots and occasional small tears (1/4" or less--repaired with clear sail tape), the sails are in good condition.

Mark
1976 H16 sail #19857