Re: do you drain cooling sys everytime?
No wind either, eh? I have yet to see a trailer cover that doesn't creep from wind unless it's snapped on all around, or the old style that uses 200 bungie straps.
There's no reason to leave the plug in when the boat's outside, you're just asking for trouble. Covers rip, clips break, seams come apart. Playing the odds just isn't worth it.
Pull the plug unless it's in the water!
My cover does snap all the way around and fits tight as a drum. The boat sits next to my house, I see it everyday when I go outside. If the cover were off, I'd notice it............Note: It has been under a carport since 2001. But from 1985 to 2001, it sat outside in the open.
One reason I always have left the plug in is because it closes up the tunnel that mice could use to get in.
If nothing else, I have learned from this thread that if I need another cover, it will come from the same place as my current one since others blow off, leak or whatever else. My current cover is 12 years old and was about 500 bucks when it was made. It's getting a little faded now and needs the binding on the edges replaced. I thought about getting a semi-custom to replace it for way less bucks since my boat is now pretty old. However, it looks like getting a good fitting custom made cover may be worth the extra bucks.