Replying to No skating in pond skim competition?

Kinda coming to vent. So I wasn't even there, but my cousin was doing a pond skim competition at our local hill this weekend. He was moving across the pond faster than anyone else, but was told at one point he was DQed for skating. No one every communicated it was against the rules to skate(also what kind of rule is that?). He wasn't given another try and when I reached out to the guy coordinating the thing he said he told him twice not to skate, but the guy was basically yelling it at him as he was going down.

What really makes it fucked up is that the guy coordinating is a snowboarder and said it was unfair to the snowboarders. This same dude apparently bought the prizes(pair of skis) from the winning boarder(who didn't even make it all the way across in the last round.

Just wondering what the rules are for pond skims at other places and why would they have skiers and boarders compete against each other and then tell skiers they can't pump speed by skating.