Been too busy at work and just saw this thread.
What I do for smoking is to wrap my wood chips in an aluminum foil package. I then punch some holes in the foil on the top and plae the package on the flavorizer bars toward one end of the grill.
Whichever burner is directly under the foil package needs to be turned up fairly high. Experiment to dee what setting works.
This does block some of the heat, but I find that by moving the piece that I am cooking around a bit as I turn them, I can still get fairly even cooking. Of course, if you don't have a full grill, you just don't try to cook over the foil package.
After the cook, I just pick up the package with my tongs and toss it.
Mike S