Sum, with these cars being so low, what happens when you jack the rear?.
Doesn't the front spoiler dig into the gound?.
More complicated than I thought.
In our case the spoiler is attached with dzus fasteners and comes off very quickly, but yes that could be a problem for some cars. If I was going with the dolly approach that I suggested I'd make one where the tires on the dolly were just a couple inches off the ground (not as high) as a commercial one. That would make it easy to ramp the car onto the dolly and not move the nose down much.
The major negative I see about the dolly is you are towing the car backwards and that would be a pain in the lanes at the starting line. I'd undo the car just before the area where you enter the lanes off to the side and then push it from there. I can't see that short distance being a problem.
I also like the idea of pursuing the pump deal with the transmission guy,
Sum