Launch sites around Charleston

We keep an H14 in Wild Dunes on Isle of Palms, only one place to launch and not easy. Does anyone know of some launch sites along the waterway or near some of the open water behind IOP. Maybe easy to launch off Sullivans then sail upto to WD if I knew where. Would like to get into the back water for the young kids.
Tks

I realize that it's an hour South of you, but there is a nice beach on the Southern end of Edisto Island. We were camping and kayaking there last summer and talked to some guys who had a Prindle 18 there for the weekend. Since that stretch of beach faces SouthWest, it's nicely protected from the ocean and there is a large bay to sail in.

Jack