Southport Marina also has dry storage. Southport is 30 minutes from Wilmington. I like it because it is at the mouth of the cape fear, right where oak island and bald head island are located. Great fishing and cruising in the area, lots of artificial reefs to fish. You can explore bald head on a day trip, or walk around southport. You can cruise down to Holden beach easily or head up the river to Wilmington. Not sure if Wilmington is a must for you. If not, southport might be worth a look. Not sure of the cost for dry storage. When I am down there I usually stay at Bald Head and dock at the marina there.