Why not simply paint the bottom with bottom paint? This will keep the
bottom clean from slime due to prolonged exposure in water. Although it
runs approx. $180/gallon, it works like a champ. We use Trinidad SR for our
sailboat, which sits year round in the Miami River when we're not out
cruising. You can find this and similar products at West Marine or any
chandlery. Good luck.

"Sigurd246" wrote in message
...
my boat is docked for the summer in one of our southern ohio lakes. the
water
temperature commonly goes above 80 degrees for most of the summer.
consequently, when i take the boat out to trailer it, the entire bottom
is
covered with a thick layer of scum and slime i dont know the scientific
terms
for this green crap, but i do know that it is very difficult to remove.
my
boat is a 21 foot aluminum hull, sylvan, sportfisher. it has a painted
hull.

can anyone tell me a good way to get rid of this stuff? i have tried
powerwash
(at the local carwash) and it barely removes any of this stuff. last
year i
had to get under the boat, on my back, and scrub very long and hard to get
cleaned. is this the only way to deal with this problem? thanks.