I just havent been happy with the light air performance of Sorellina. In the strong stuff we have really scooted but even though we should really go in the light stuff I think we have been lagging. That means I must do one of boating most miserable jobs. . . remove all the old bottom paint! I am using the new green stuff mainly so I wont get burned by the old style stripper and well it works well about as well as the old stuff so just as slow and messy. I have used about 4 gallons of the stuff and most of the really thick hard stuff is off but there is a lot of sanding to go. What we do for speed.