[SS Engine Guy]

Should just do it the easy way. The way it was done for years. When the first pair leaves the head of stage heading into the water, the signs at the rear of lanes are turned around and say closed. Unless you have notified the head of staging that you are working on a broken car and are trying to make the round, you are done for the race. I have had to send someone to notify staging control that I was finishing swapping converters, gears, because of breakage in the past and had a tech official come to my pit to verify that the car was apart several times in the past. Perfectly reasonable way to do it. Probably speed up pairings also.