Please check my ideas with someone else before you commit, because my
ramp needs are probably different than yours. That being said, I think that most
marinas and state parks will do fine. I have launched at East Harbor, Maumee Bay, and at places on Catawba Island (Not an island at all). At East Harbor, you will need to
motor (in my case, paddle) through a channel to get to the lake. Actually, at Maumee bay, we launched over the beach, but I think there is a
ramp to the west a few miles.
There are probably many more, but I have only been to these.
Ron