RE: One antlered decoy?
I'm not sure it really matters...
P&Y bucks come to a buck with 1 antler prob. the same they would one with 2 and vice versa. Ifhe's coming to a deke, imohe's coming to the deke and if he's not..1,2,3,4 horns is not going to make a difference.
A friend of mine had a guy from WI come hunt with him a couple of years ago that shot a 196" off a single horn decoy...That bruiser wouldn't have cared if it had 10 horns attached to his head. 1st shot was in the shoulder and that just pee'd him off so when he came back for round 2 with an arrow hanging out his shoulder, he got it in the boiler room w. the 2nd arrow.
That's for jogging my memory...that thing was a size large whitetail!