Pulled up to a blind I constructed on a pond that had not yet been 'claimed' in early september, that i had hunted during the first split, and had brushed midweek this past week to find it occupied, decoys and mojos set and all. Blind is on well known school board land but still was shocked to find someone set up in a blind that they contributed nothing to. Hunted another pond and managed to come out with one dogris but had plenty of opportunities at mergansers but I prefer not to shoot. I was awestruck and disheartened that a fellow duck hunter would hastily decided to hunt a blind knowing full well they did none of the heavy lifting and scouting. Hoping to find better luck during weekdays with less competition for limited spots. All in all a discouraging morning to be a hunter and a person at that.