Glad to hear the G Cat is sailing! If you want to leave it "on the water", build or buy a float that you can tie it down to, but that will keep it out of the water.Be sure to tighten the rigging with line so it doesn't blow around as Jake said. The only other option I can think of would be to make a "railway" out of PVC pipes on some sort of wooden frame, that you could slide it over the rocks on. Mooring it for even a season will likely shorten it's life dramatically. I've seen a H14 turn to junk after one summer.