Jim -- they are real easy...just takes some time. Mickey has a good skin along, I think and there have been others...Eric might be doing one now, if I'm not mistaken.
Scratch up the back a bit, lay out some TBII, smooth out the skin real flat on the surface (soak the skin in warm water for a few minutes to make it real pliable)...keep smoothing it...trim with new, sharp razor after glue sets up (an hour or so)...use tape to remove scales after a day or so of drying...refinish.
Plenty of skin alongs...do a search.