I’ve got no dog in this fight, however, here’s A thought for “RacingMom”,
I’ve raced in various forms of Motorsports including professional offshore boat racing. They also had “engine claiming” rules, as well as propeller claiming rules. Some high-end props can run $2000-plus. Some engines start in the $40 k range and MUCH higher! Every driver/throttleman/owner is aware of this rule when they pay for & sign there name on the entry fee. It is a great way to control the classes without a lot of time (and expense) spent on tech inspections. Claiming rules are an effective and low cost way of keeping racers honest. If someone “claims” a perfectly legal engine, chances are they lost money.