Tom, I have to say that the problem of outright cheating in tournaments isn't nearly as widespread as it may appear, but I do know that tournament anglers take the subject quite seriously. There are also different levels of cheating.
There are those who try to bend the rules. They bring in a fish that bumps just a little short, come in a few minutes late, or maybe push a no-wake speed limit. These infractions are usually taken care of in-house with preset penalties. Then there are the guys who flat out break the rules, such as this guy did. I've never seen law enforcement involved, but then in all of the tournaments I've fished in, there was only one where such an event took place, and the tournament director actually caught three individuals that day. One was caught with a fish basket, and the other two were caught using live bait. All three were told not to show up at the weigh-in, their names where given out to all of the attendees, and a letter was sent out to all of the area's other clubs detailing the infractions. This type of public shaming was the big penalty, as almost every other club or TD would make sure that the cheaters couldn't move their act to another group.
By the way, my partner and I won that day and we were even checked by the TD. We were fishing one small sunken island within sight of the launch all day and the TD's wife mentioned to him that we hadn't moved for a very long time. Of course when the TD saw that we were parked on a large group of beds, he understood why. Had we lost that tournament and found out later that a cheater had stolen it away from us, yeah, I would've been peeved. It really wasn't about the money for us, it was the recognition. We were fishing someone else's home water, and on that day we came out on top. Our goal was to proof that we could beat the hometown boys in their own backyard. We wanted to return the next year, and hear the groans that they just might be fishing for second place.
Tournament fishing is one of the few amateur sports that doesn't have a built in handicap system like golfing or bowling has. Nobody can sandbag for an advantage, and no individual or team gets to start the day with a fish or two in the livewell at blast off. I saw too many times in those other sports where the golfer with a maxed handicap shot a course record net score, or the bowler who threw a 900+ series when his handicap was added in. It always amazed me at how many people just accepted these things, and I got to the point where I refused to compete in either of those sports. But fishing started everyone out even keel. Maybe that is the reason why cheating is looked down on so much.