Clint that is why I usually use prosciutto, it has a more delicate flavor, does not overpower the scallops and is very thin so cooks up very quickly. Scallops should be turned when they are very slightly browned and removed when the other side is the same. Otherwise they lose a lot of flavor and are tough.
And no I do not do them indirect, not needed with scallops. Quick very quick till very slightly seared on top and bottom.