I use a boss buck that has been beaten to crap, have the legs screwed on with drywall screws. Works great if the bucks are looking for a fight. Make sure to handle it with gloves and spray it down completely once in place. I only use 1 antler on it, seems to instigate more bucks than with both on.
Have a friend that bought a Dave Smith and gets good results, but its heavy as hell.
Doe decoys do not work for me, they agitate the does, but the buck decoy they ignore.