Re: First bottom painting
If you use dish soap as a degreaser/wash down. DON'T use soap with any type of additives IE. lotion.. We use to use Ivory. When we used to wet sand we would add a few drops of ivory to the water to take off extra wax.
That being said; i would still use a good de-waxer product to clean the boat before painting. You don't want to find out 2 years from now that you have adhesion problems. There are 2 types of adhesion; mechanical and chemical. Since you are using the mechanical method it must be free of all contaminants. The cleaner the better.