The captain I fish with uses the Gammi SC-15 2/0 (NOT the heavy duty one shown in th pick). We fish oceanside (super clar water) and I think that it is important for the fly to land softly, sink slowly (usually) and the thin gauge really seems to penitrait. It is unbelievable how strong thos hooks are. I've straightened out only a couple (we have landed fish up to 130#). The point does roll at times, so we check it on every bite. What an amazing hook!
One cast can change your day...maybe your life.