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.