We stayed in Frisco too. We liked it as it was more spaced out then Cape Point, which we didn't care for. The back road in Frisco that has the sites in the 60's and 70's was the highest and had the best views, also the most wind. We stayed in early Oct., I see they are open till Thanksgiving now.
We wanted to stay at Ocracoke too, but one of the ferries wasn't running so the logistics didn't work out. I had heard the bugs are bad there.
We didn't look at any commercial campgrounds, rvparkreviews might help if that's what you are looking for.