Stir together the flour, salt and garlic powder on a plate. On another plate, crack and beat the eggs (one at a time, if two is too much volume for the plate). On a third plate, mix together the panko and dried coconut. This is your breading station.
Add around ½ inch of oil to a large, heavy-bottomed skillet, and bring up to around 350 degrees F while you bread the fish filets. To bread the filets, dredge them in flour, dip them in egg, and then toss them in the panko and coconut mixture until well-covered. Once breaded, they can go immediately into the hot oil.
Fry the fish, flipping once, until golden brown on both sides. When nicely browned and crisp, remove the filets to a plate covered with paper towels so that they can drain excess oil. Salt liberally when they come out of the pan and are still hot.
To serve, plate a still-warm fried fish filet and top it with a generous pat of compound butter. The butter will melt and sauce the fish. Add a lime wedge for extra acid and a bit of rice and beans, and you have yourself an excellent plate.