My new 2014 Manitou pontoon boat was used 3 times Summer of 2014. After sitting on blocks over winter I wanted to clean the pontoons before putting in the lake. There was a lot of brown algae, white stains, black stains, white lines and black lines on the pontoons. I cleaned with diluted dish washing liquid as advised by dealer service. Surface stuff came off. Pressure washed as advised and more algae came off. I complained to the dealer they still look like 20 year old pontoons. The dealer acid washed and pressure washed. The pontoons are almost clean now. However, you can see deeply etched continuous lines back to front at waterline. The boat was rarely used because the battery was dead every time we tried to take a ride. The serviceman checked it out. He said the radio or an electrical short could be causing the battery to discharge. When the dealer returned the boat after cleaning I complained about the white corrosion lines. He said it could be stray current corrosion. I told him I want it checked out and fixed because the serviceman had previously said the problem may be a short in something, maybe the radio. The dealer said no way to know what is causing the problem, in time it (radio, etc) will stop working and we'll know the cause. I think I know what's going on, but would value your comments. Your comments are appreciated.
