Dishwashing Liquid?
What I have done in the past, Go Buy a NEW plastic garbage can, you probably need one anyway, than buy a bottle of Sail Cleaner. Put water and sail cleaner in can along with sail, swish it around a bit.. take the hose rinse it off when its done and than hang it on the clothes line to dry. We did this with our sails for our Catalina 22. The jib sail we cleaned on our 25 ..we had to put in the bath tub! or you can send your sail to SAILCARE and they will do it for you! Good Luck