THIS. My default BBQ prep almost to a T. If I have more time, or there is lounging/drinking time, I will use the real ingredients instead of the soup mix. I would add a good selection of mustards.
Bonus: Prepare some potato packages! One good-sized sliced potato per tin foil pack/person. Several huge slices of Spanish onion to each pack. One garlic clove finely sliced (by hand!) and a good lashing of real butter also to be added to each package. Put on top rail of BBQ to smoke/cook for 40 mins. When the onions are caramelized/blackened is when they are ready. Enjoy. (NO HOMO)
You are wise chimps, I will try your method. Also, if you have a white onion around, chop it in half, and use one half, flat side down that to clean/rub/wipe the grill before applying rest of food (sounds weird, i know). then put the half onion off to the side, let it carmelize, and then cut up when you're ready to eat.
Also, throw some fresh rosemary on the coals right before you put the meat on.