Re: how to clean lake scum
best way is product called on/off. can be purchased here at iboats or any marine store. apply, let sit for a minute or so, scrub lightly, and rinse off. takes off pretty much anything. just be very careful with it. wear goggles and gloves, and don't breath too close to it. watch for it blowing if you spray it on. great stuff, can clean the waterline in about 15 minutes tops.
