I know they pull the docks at Moraine right around now. They were in last Tuesday.
I rented a cabin at Pymie in November once as well, and had the docks out. I would assume the other docks get pulled, at least on PA side.
The Ohio side has a public access launch near the causeway (dam side of causeway about 2 miles), that is deeper, and I recall the dock being a good portion concrete. We had to launch there a few years back when the lake was really low. I would imagine that it would be a good place to launch after docks are pulled. A pretty long run, if you are planning to fish near the dam though.