@DavidT you can usually find some clinics held with pro coaches from time to time, maybe not this summer. There is still a ski club/group skiing at Logan Martin Lake by the dam. My daughter and I ski on Lay Lake, and keep up a slalom course there. The people at Lake Martin Marine can help you on that lake, there are slalom courses there also.
If you want to ski with us some time, email or call me. My daughter and I are both very high level coaches.