Tim,
I just did leg quarters via Keri C's Turbo Chicken. You can find this 'recipe' under Poultry Recipe's on this site. Just scroll down to the subject 'Keri's Turbo Chicken'. It came out great. One thing I would change if I did it again tho would be to add less smoke wood. I put on 3 small chunks of apple, and although the chicken came out excellent, it was just a tad to apple-sweet for me. I believe she uses wood pellets in her cooks, so I can't compare how my apple chunks would compare to the wood pellets as I've haven't used them yet...
Oh yes, I cooked 6 leg quarters on the top grate when I did it. WSM hung around 325*. Took about 50 minutes to cook. I would shoot for a cooker temp of at least 350*, if not hotter if you use this method of cooking them...
Ron