My hunting buddies and I have been rotating through several of our public spots in NE OK this season, and found one on Last Saturday that seemed to be "The X" for several large groups of Mallards in the early shooting hours. So being public we would show up between 3 and 4 and start breaking ice and setting decoys, and would run into several groups each day that would arrive after 5:30 which would all politely find a spot out of range in the same area. This happened again on Monday, and while flipping switches on motion decoys at 6:55, had 40 land in our hole, some on the ice and then another 25 at 7:03. To make a long story short, frozen moisture in your magazine makes for no birds.
So on Tuesday the 31st, we got out extra early due to the amount of birds we saw the morning before (and didn't shoot at), and we had a pair of younger guys stop and ask if they could join us because they had just run into the group of 7 400 yds south of us. We thought we would have a full blind so we politely said no, and they moved 150 yds to our west and set up. Needless to say, I owe all the credit too these young men for our 2 limits of mallards that morning. These guys called like they were on stage at Stuttgart or were playing a Buck Gardner how-to CD at every bird they saw circling our spread, which my instinct for the first 30 minutes was to try and compete with the calling. After not a bird decoyed in that half hour I started to think, the sun is up and I can literally see these guys faces from how they were positioned, and there was not an oz of wind, so I put the call lanyard in the bag, and watched group after group decoy into our spread, while these guys blew their loudest comeback and hail calls they could muster.
These guys picked up around 9:45 with one mallard drake (Which was flying low and they had no chance to see or call) and an hour later the two of us nailed our final pair for a two man mallard limit. So thank you guys, whoever you were, and if the hunting doesn't work out, give me a call and I will pay you $10 an hour to setup and call near us any day.