[Finallybuyingaboat]

I am entirely redoing a shark 24 and want to put VC-17 on the hull. I have sanded off the yucky black antifoulign paint and have gotten down to a hard paint layer(s). I am not sure if I can apply VC-17 directly on to this. The paint is a copper/gold color, and some areas where I have sanded through this copper/gold layer there is a coat of a hard blue paint showing through. I have no idea what brand of paint this is, but can I chance painting VC-17 right on this? Any other ideas for a really fast bottom paint for freshwater that does not require me to sand right down to the hull. I am not even sure if I could sand down this hard paint, it is EXTREMELY difficult to sand away. Worse case, is there a primer I could put on between the existing paint and the VC-17?

Also, any other really fast bottom paint alternatives worth looking at? Any new Teflon paints out there anyone is aware of?

Thanks