I can report that Columbia River smallmouth bass hammer a Miyawaki Beach Popper when they're hanging out in a current seam off a point or rock. I also hooked jack Crevalle and sierra mackerel on beach poppers in Mexico. I think I would have hooked many dorado as well, but I left my popper box in the hotel room that day. I'm dying to try Beach Poppers on roosterfish. I'm convinced that they will work. Puget Sound sea-run cutts go nuts over Miyawaki poppers -- in fact they get so eager that the sometime miss the fly entirely. That's OK, as they usually swing around for another shot.