I was cooking salmon steaks on the grill and had a package of jumbo peeled (except for the tails) shrimp from Sam's.
When the salmon was almost done, I put them in aluminum foil and put them on a top shelf in the grill to get them out of the way and to get them to cook slower.
I put one of those standard cookie sheets (with the half-inch high sides) on the grill, covered the bottom with the frozen shrimp and probably 3/4 stick of butter and sprinkled garlic powder over the top of 'em.
I opened the grill and stirred the shrimp around a couple of times to make sure they got coated with butter and garlic and cooked evenly.
MAN! They were good!