I only made reference to the honor system that works well enough for them.
I prepared a 258 inch V-6 that was direct measured for an SCTA, 200 Club, and an FIA record all in the same week at Bonneville.
The next event was at the salt also and the person that was verifying the club record on that same car used an air pump.
He instructed us on what to do to prepare the engine and was not aware of the requirement to disable the valve train.
I knew better, but followed his directions exactly.
As you might imagine the pump declared the motor to be substantially smaller that it really was.
I waited until he was done and quietly went over the proper method with him and you can bet he was a lot more attentive to detail than he demonstrated to me after that.
RELAX