Join Date: Apr 2010
Location: Wayne, PA
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Re: 2019 Sailing Season on the Chesapeake
We've had some extremes in weather, going from deep cold to 50 degrees quickly, some melting snow and a lot of rain since last summer. All of that comes into play in the storage yard. If wind is working against the hull a tiny bit of motion over an extended time can also slightly loosen boat stands.
Most of the boats in our DIY yard are on hard packed stone where boats have been stored for years. Almost everybody uses plywood squares under the stands, those who don't usually figure it out or are told by season two. Whatever the preparations most winters the ground and the boats move a bit.
We each check our own stands and usually the neighboring boats every couple weeks and it is not unusual to have to tighten or loosen stands. Not a big deal, just part of life in a boatyard.
As Ulladh mentioned, most of the time it is a 1/4 turn or so, but with lots of rain or quick freezes combined with not checking for a few weeks it might be more.