I have been pumping out my tank through the pick up from the gas tank. It seems to be the best way to get all the water out of it. I am now at the what I feel is the bottom of the tank. What else can I put in to get the rest of the water out of it? I did open the top of the tank where the float is. That was an impossible task because the screws were under the floor of the boat which is a 1996 Aquasport Explorer 215. I seemed to have beeter luck with the pick up. I will be changing the the water seperator as well. I was told that I could put alcohol in the tank. Is that true?