Don Kelly and George Hahn
For TRA in 1992 and 1996, I removed the front bumper, the grille and wires, un-bolted the fan and stuffed the feed wire up out of sight. There, they didn't remove any points. After the show, I'd still be there on the show field for an hour putting it back into place.
But then I thought to myself that the judges would have to get down on their hands and knees to peer at a black Kenlowe fan in a black painted area with a black radiator and what they found out was that the knees of their pants got scruffy on the dirty asphalt or they got grass stains if the concours was held on the grass. I believe they can't see very well or they don't bother to check. I leave it on now and I can't say that I ever got points removed because of the pusher fan "hidden" behind the grille of my 1958 TR3A.
My fan has 10 blades if you go back up and look at the photo and the hand-crank might have a bit of trouble to get through the space available because the outer ring shroud keeps it all pretty rigid. I could try, but it's been like this for 18 years so why bother. But I have to admit that it's a good idea.