Thanks for your response. I'm not sure if I sanded before I washed or after, but you are probably right...I probably sanded first. Since I will be sailing this boat off the trailer, I'm not too worried about the paint-flaking from an antifoulant perspective. I will, of course, recoat at some point in the near future. Do you think I'll need to prime or do anything else unusual to reach a point where the bottom paint will adhere as it should?
Sailing isn't a matter of life and death. It's much more important than that!