FWIW, I lived on Folly for about 6 months for a Fall and Winter some years back. The U.S. Government footed the bill for my residence, a house situated right on the beach about a stone's throw from the best break on the island (Washout).
I think the waves tend to funnel in at that spot a bit better than the rest of the island because of a big hurricane that touched down right on that spot, creating a big trench (hence, "washout"). Maybe Hurricane Andrew? Sometime around 1992 I think.
I guess if I could compare Washout to any other break, it might be comparable to OCMD. Maybe even a little like IB, but not quite as long or strong. But it breaks top-to-bottom and will snap a few boards.