OK, I skinned my kayak and dragged it outside to hose it down. I noticed a lot of white foam coming off the canvas as I wet it down and scrubed the water into the fabric. I assume this stuff is the sizing I was warned about. Do I have to keep going until there is no more foam or is a good soaking enough.

Hurry, my water bill is getting out of hand. And its suppose to get cold when the sun goes down.