I get great results from Move It.
Dilute ,sponge on and leave or apply with spray bottle.
Not caustic and fabric safe, great on teak deck,sails,sheets and covers.
Have not applied to wife but pretty sure it would be effective.
Why would you want to buy salt to make salt water,last time I looked the ocean is not a bad place to start.
Go for a sail and clean your boat the natural way.