To trim, I slice off the thin triangle of turkey breast that lays over the tail end of the breast -- you will notice that all bird breasts have a thick and a thin end, and you are trimming the turkey's breast so you have, more or less, a big cylinder of meat that smokes better.
Mix together the salt and sugar. Massage the mixture into the meat and, ideally, vacuum seal it. If not, put the salted turkey into a freezer bag. Set in the fridge for at least 3 days to cure.
Remove the turkey breast from the bag and set it in the fridge, uncovered, for an hour or three to form the pellicle, a sheen that allows the turkey to take on smoke better. Turn the turkey over a few times while you do this. Don't skip this step!
Smoke the turkey slowly at about 200ºF until it reaches an internal temperature of about 160ºF -- this takes about 4 hours with my smoker. Let the turkey smoke undisturbed for an hour, then paint it with honey every 45 minutes or so until it's done. When the turkey is ready, take it out of the smoker and set it on a rack. Paint it one more time with the honey and serve any way you like it: Warm for dinner, or cold for sandwiches.
Once made, the smoked turkey will keep in the fridge for a week or so, and can be frozen (vacuum-sealed is my preference) for up to a year.