Thank you both, that testimony would support the idea that folks aren't going to go very fast through the narrows, which in the case of a "Narrows Average" kind of trophy class, limits the range of available selections, say from 95 though 125 (seven classes), and perhaps one or two more for the high-speed and unlimited cars.
It might be an interesting additional challenge to add to the mix. I for one would probably enter it, as (like Mike indicated) I try to bank time ahead of the Narrows so I can slow down to a leisurely 100 MPH or so then bump it back up to average and I should be close to time. I use the OOR Aid Nomograph to calculate my time lost at a specific Narrows speed entry and exit, then build my course notes accordingly.
I'm not trying to get Tom out of the dog house with Bunny here, I'm leveraging the idea first proposed by Deven, which would be much -safer- than the April Fool first proposed.