IMO Nothing floats like a Cork decoy
One year I spent the BIG bucks and bought LL Bean cork mallards. Early season they're to heavy to carry into remote locations. Late season, cold temps, they never had a chance to dry between hunts and ended up being frozen blocks of ice. Also, the tail is a piece of wood slid into a slot in the cork. If a decoys tail was perched on to of anything else, and you applied any pressure, the wooden tail popped off the top chunk of cork, rendering the decoy worthless.
Remember, this was before the days of slotted decoy bags, the dekes were being stacked (thrown) in the front of the boat. We're not easy on gear.
Just wondering what others experiences have been.