I did a turkey in May. High heat was the key for me because it offered the crisp skin. My notes are below. The "turkey triangle" note is in reference to Alton Brown's foil triangle when he roasts. It's a loose piece of foil placed over the breast after the first cooking stage is complete to help keep the breast moist.
BBQ Turkey Notes 5/1/11
Solution soaked, 14 lb bird from Supermarket - do not brine.
Salt, pepper, unsalted butter, veg oil
2 pieces cherry wood
2 chimneys of RO briquettes
Dry, foiled pan inside and out.
AB Foil/Oil Turkey Triangle
Probe thermometer
Brought heat up off the scale and all the way back to zero past the Weber logo.
Assembled smoker
Rubbed turkey
Quickly oiled grill
Added turkey to smoker with probe inserted into breast.
Added wood and left door ajar to keep up heat as well as all vents
Kept this way and at a 350- 375 or so temp for 40 - 45 minutes. Temp gauge was into the Weber logo just near/into the "R" for most/much of the cook period.
After 30 min (internal turkey temp of 76 degrees). Very nice color and crisp skin.
Closed door. Added Turkey Triangle and adjusted vents throughout the balance of the time for a 350ish or so cook to finish. Temps fluctuated around 340-375 and vents/door were adjusted to keep temp in range as needed.
Cooked till breast probe reached 155 degrees. About 1 Hour and 45 min.
Rest 15-20 min lightly tented (temp will continue to carry over) and carve.
**Optional**
Pan is designed to catch drippings for gravy.