In large non-stick skillet, cook bacon until crisp; move to paper towel-lined plate to drain.
Reserve bacon fat in pan. Finely chop bacon into crumbs.
In bowl, stir together mayonnaise, dill and garlic.
Heat bacon fat over medium-high heat. Sear scallops, flipping once, until browned. About 1-2 minutes per side. Move to paper towel and dry on both sides.
Spread a table spoon mayonnaise onto each scallop and top with bacon crumb.