I do 'em just about like I do every other fish, but I usually (unless its a REAL big fish) leave the white side alone - not enough meat to be worth it on that side.
I make a vertical cut behind the gills vertically to the backbone, turn the knife 90 degrees, slice off the fillet and skin to the tail, stopping short of the tail itself.
Then flip the flap of meat and skin over, and, starting at the flap of skin at the tail, slice the other direction between the skin and meat.
You now have a fillet.
I then slice down the lateral line just one each side and discard the small center piece; there are, if you got all the meat, some pieces of bone in there.
What I end up with is two pieces of fillet, completely boneless.
I can fillet these things in under a minute each; they fillet almost exactly like a snapper or grouper, but with only one side...
If I get a real monster then I'll bother with the bottom, but most of the time there isn't enough flesh there to be worth it.