One old suggestion - so I don't know if it's still considered valid - was to
use your boat regularly. The early life cycle stage of the organism doesn't
attach very strongly, so moving the boat through the water at a few knots of
speed dislodges them. A brochure from the MNR years ago said to operate your
boat every week in warm water and every two weeks in cooler water.

I haven't heard of anyone with big engine problems, but that's also a
concern - the little critters blocking up your cooling water flow. Regular
running should work for that too.

====

Charles T. Low
www.boatdocking.com

====

"Wklkj" wrote in message
...
For the first time ever last summer, my boat had a ton of zebra mussels
attached to the outdrives of my boat when I pulled it out in October. I
keep
it in Lake Erie for the summer...