Tripletail are opportunistic, ambush feeders, so baitfish, shrimp and crab fly patterns all work well. As for best fly colors, they span the gamut from white to black, but natural color schemes are safe bets. The right choice depends on light conditions, water clarity and the whims of the fish. If restricted to only 5 flies, I’d pick a Del’s Merkin crab in either olive green or black, a white Woolhead Mullet, a tan-and-white Clouser Minnow or Half-n-Half, a purple EP baitfish, and an EP Shrimp. Anything similar will work, and I like to carry unweighted versions as well as some weighted with either lead fuse wire or dumbbell eyes.