I use this method on the V20 and my other bay boat. First, apply Stain Away to the area. This caustic formula can be sprayed on and just wipe off the area. Pay attention to those old stains as they may now dissapear. This process opens the pores of the boat. Next, use Johnson liquid floor wax to seal in the clean boat. The floor wax can be wiped on with a towel. Use 2-3 coats of wax depending on how long you want to go without waxing again. This wax dries in about 5-10 minutes, so you can just keep going until you are finished the whole boat. I do this on both the interior and exterior of the boats. This method was taught to us by the owner of the marina here in SE Louisiana.