For the Harken ones: If you with the fleece lined one then be aware that it picks up leaves, dirt, etc v easily... basically anything that gets remotely close to it will stick to it like velcro.... great product but kind of annoying to deal with that aspect.

Also, if you leave your boat with the rig up and the covers on, the draining system for when it rains doesn't work that well leaving water pooling in the boat cover....