I put two coats of VC17m on the bottom of my H170 today. This was really easy and went on a lot better than some of the stories I've heard. I used a 1.5 inch x 3 inch cheap ($1.99) foam roller. It's amazing how fast it dries, but it's workable. It's on sale at WM and I had another $10 off coupon... that made it even easier. Hopefully I can get in the water around the beginning of May.JerryA