Always going to have tailpipers in a tournament, gentlemen's agreement or not. But, is each scenario a tailpiper? I mean lets say I have fished the pillars before. Hear a couple guys are doing it and give it a try? I can't say that is exactly tailpiping, it's just that there is a small number of pillars compared to everything else. Not to say that is what happened I have no idea. A guy following your wake is BS for sure.
As far as anyone outside the tournament stealing spots, I would say go F yourself. It's everyone's water. Maybe I found some fish last night in the same spot and decided to fish today? Maybe I've caught fish in that spot for 20 years. Regardless, too many scenarios. In tournament fishing you better have a good plan B no matter what.
Looks like the weights were way down today. I can't imagine running to Peoria from Mobridge.