I use black plastic sheeting and sit decoys on the plastic .
I use a piece 20x 30 .
You will need to use ice or snow chunks to hold it down and a few in the middle
I use 2-3 doz duck or 18 goose decoys
I use a laydown blinds covered in white. Or you can lay on the ice in white clothes ,some even sit on white plastic chairs if the ice is rough
Paint your gun white
Lots of times the birds will hover over the plastic and not land ,but an easy shot.
You will laugh so hard it hurts the first time you watch a duck try and land on the plastic.
Ducks doing cart wheels is funny