Just used it on the new F18 kite. Goodall buys non-impregnated cloth and applies the stuff to all his kites.

We had our kite painted after purchase, so we applied the stuff bu mixing it in a bucket of water and dunking the kite. Swished it around for a while, retrieved it into the sock and then hoist it. This way the sock and kite gets a coat.

When you hoist it, face the boat dead downwind so as not to have any of the mixture drip onto the boat...... Can make the tramp and decks a wee slippery.