Pettee...sorry to hear you aint been out. We use every excuse to get wet...from concerts at the park across the lake to supper downtown to tubing and just hanging out on the fantail in the lawn chairs with Corona and limes. Or, getting the old lady down below for some afternoon 'napping'. Make it happen...come up with an excuse. My 12 year old son is the launch and retrieval director now...I just drive the truck
For the black stuff...try some diss...Krud Kutter. Spray on, then after 5 mins hit it with a non abrasive blue scrubby. SOS makes one. I love Krud Kutter. Stuff is great...use full strength, buy gallons, and get a spray bottle. Rinse off with the hose.