On Mon, 5 Oct 2009 11:24:10 -0400, "Dan Listermann"
wrote:

We keep our john boat in the river 24-7. It appears that there is about a
3/4" growth of algae on the wet surfaces. Is there a way to prevent this
and, failing that, what is the best way to get it off. Getting it out up a
river bank can be done, but it is not easy.


You can use an anti-fouling paint designed for fresh water but it will
still need to be cleaned once in a while. Best bet is to pull it out
on a trailer and pressure wash it, or skid it out with rollers and a
4wd truck.