posted 08-17-2001 01:49 PM ET (US)
Pour in the proper amount of MDR "Waterzorb" (depending on fuel in the tank) then literally run the boat out of gas to empty the tank. Carry an auxiliary six gallon tank to plug in when the engine dies. This will still leave about 4 unuseable gallons in the tank, but which will still have the waterzorb in it.You will still get condensation on the inside surfaces of the empty & cold tank, especially after days of deep cold followed by a warm humid condition. But with out the alcohol laden gas to creat phase separation, there should not be an internal corrosion problem.
In the spring, when you fill it up, use a full dose of the Waterszorb again, and after the first tank is fully used, change your water separating fuel filter. You should be fine. You are correct in not overloading the hull on a bunk trailer. If the boat develops wavy sides, that is the first sign of long term improper hull support.