Just in case someone else is working with a cheap grill and wants to bbq. I've done this a bunch of times with chickens and baby back pork ribs with good success. Not my idea but its been around for ages.
That trick works awesome!!! Too bad I suck at bbq'n with bricketts/charcoal. I'm too impatient for the briketts/charcoal to be at a stable temp. Propane grill and pellet smoker for the ease of cooking.