I'm convinced that fish are learning to avoid the popular patterns. Any doubters can easily confirm that the effectiveness of Gotcha's on Andros is inversely proportional to distance from Cargill Creek, where angler density on the island is highest.
And there's definitely somethhing to be said for throwing a big, flashy patterns to fish that are refuising waifs.
Back to the original thread, I'm still looking for a small lifelike crab fly. Velcro crabs turned out to be a disappointment wrt their lack of action. I managed to tie up some #6 merkins and bitters for my next trip, but I'm all ears for other suggestions.