It's not just the winter. During the summer months it sits in the slip
with the cover on it, and it builds enough moisture under that cover
that it will start developing mildew spots. Those are easy, but the
ones that develop during the SC winter are much worse.
I'll probably pull it out of the water this year for those four months
where we don't use it much. Maybe that'll cut down on the moisture and mildew.
I could just leave it uncovered and let the sun and rain take it's toll.
Probably no mildew, just would have that fresh "sun-baked" appearance after a while.
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We recently had a new cover built for our Searay runabout. Our canvas
guy installed support poles with vented top hats which are supposed to
minimize mildew issues. We'll see. Mildew is a significant issue
even in Florida if the boat is not used frequently. Here's what the
vents look like:
If you have a good canvas guy he can probably install them in an
existing cover.
Another product that we're using successfully on the trawler is solar
powered exhaust vents. The solar cell charges up an internal battery
during the day which has enough power to run all through the night.
They are easy to install if you have the correct hole saw. I went out
and bought one since I was doing 6 vents.
I used to use one of those solar powered vents. Built a box that went over
the bilge vent hose connection. Worked great. I now store the boat in a
modified Costco portable garage, no sides and metal roof.
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Mildew removal... redux
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