Where I was yesterday (out on S.I. WMA) the guys before me had broken up a pretty nice hole in the spot, however they'd thrown all these chunks of ice all over the place...up on top!
It looked like a real mess, though it didn't seen to particularly flare any ducks off my dekes.
However, my preferred way to do it is to take my duck seat, which is a monopod design, and use it to punch a series of holes in the ice, similar to serrations on a postage stamp.
I can then break a "pattern" on a big sheet of ice (like a large hole), out of the ice and push it UNDER the rest of the ice!
If the piece is too big, I can make an "X" serration in it and push the 4 pieces under the ice individually!
I was hunting a "smallish" pond and I was only using 8 decoys and a Spinner. This worked just great as on Thurs. I had HUNDREDS of ducks in/around my spread at under 30 yards using this setup (mostly Sprig & Spoonies, some Teal and a few Widgies & Mallards).
One thing I noticed this icy period where I was, is that the ducks were just as content to land ON the ice as in the hole!
In fact I watched many land IN the hole then climb back up on the ice and stand around the dekes ON the ice.
It sure made me wish I had about 8-10 of the Enticers!
Maybe instead of breaking a big hole, just put the spinner out there with a couple of small groups of Enticers standing ON the ice?!!
I'd bet that would work as well as a big batch of floaters!