Diving at the ramp is good, you can go pretty deep in a relatively short distance, the down side is lugging all of your equipment. Getting a charter with Lake Jocassee Dive Shop will get you over to the wall and the Junk. There is quite a bit to see at the wall and you have the opportunity to dive deep. I haven't dove the ramp in a while, but go out to the junk quite a bit. The divemasters that go out there are quite knowledgeable of the wall and surrounding area.