Also note ...

I have moved the stern line from the port aft gunwale cleat under the cover to the tie ring at the stern. Boat movement caused the stern line to lift the cover off the corner of the boat. See previous "problem" post. Same potential problem is on the bow line if secured to the cleat under the cover rather than the bow ring. But ... It does not seem as bad, the cover stayed put last night. I am leaving the bow line alone.