Setup 1
Marsh and small water: the J-hook
The go-to puddle duck set. Bunch your mallards upwind in a loose raft near the blind, then run a tail of decoys downwind to form a J. Birds follow the tail in and land in the open hook in front of you. A dozen and a half to two dozen decoys covers most potholes and marsh holes.
Two Standard Mallard 6-packs and a Flocked Head Drake 6-pack gets you 18 decoys and 12 green heads.