Willis, here is a detailed description of how i roast a turkey in the bge. ...just a hint of smoke ....be careful with the smoke... what you like may be overpowering to your guests. . .to answer your specifi questions. .. i baste ever 20 minutes or so. .. i don't worry about heat loss as it comes right back when i close the dome. .. add wood at the beginning and make sure it is burning clean so you don't get any bitter smoke hitting your bird. . .i like fruit wood (apple or cherry), maybe pecan, for a turkey. ..good luck. . .