Use what you need to to get it off. Wash and wax the whole boat (not the pad) buy some Bassboatsaver. Apply the BBS over the wax on the whole boat. the stain will show after being in the durty water but after spraying the BBS and wiping off it will be gone and andything else as well. Bugs,roadtar ect will not stick as long as you clean the boat with the BBS after every trip. I buy it by the gallon and they give you a spray bottle to use.