Sail cleaning

I use a soft broom and truck wash on a lawn then haul up in the air and rinse off. I also have a big tub [old marker buoy can] I can soak sails in truck wash. Avoid hard scrubbing, acids or bleach. Rust stains can be removed with careful use of oxalic acid but you risk damaging the sail. It depends a lot on the sail cloth and the filler level. Be cautious.

A mate of mine lost his mast to the bottom of the Swan River with his jib and main, was in fine mud for a couple of weeks, he used a karcher and they came up a treat. That said obviously there were no rust stains.

Probably soft sails. The problem with a pressure cleaner is it would possibly ruin a hard or heavily resin filled sail. Commercial sail cleaning companies use a tumbler style washer which can have the same effect. Best bet is to treat the sails gently.