Yes, at one of my races in RCU a few years back we ran in the Spirit of the 1965 Tahoe regatta. Qualifying speeds were set based upon a straightline straightaway speed.
People set their boats up to run straight at the radar gun with no need for turning. Hence they ran wth teeny skid fins and big props then changed their setup back to more conventional ideas for the heat racing.
The top 12 boats made the fast flights, the next 12 were in the mid flight and the remaining 12 ran with the slo pokes.
Season points were awarded full points for the fast flight, down one place for the mids and down two places for the slo pokes. ie 400, 300, 225, 169, 127, 95 fast guys, 225, 169, 127, 95, 71, 53 for the slow pokes.
For the final 3 moved up from the fast, two from the mids and one from the slo pokes.
Made for some interesting qualfiying strategy. "If I run with the slo pokes, I can beat them all, but if I screw up a heat only one guy moves up" and variations. It is a neat idea for one race where there is some strategy into your calculations as much as pure speed.
If I remember correctly the top 12 ran speeds of 58-62, the next 12 ran 52-58 and the slo pokes below that.
All that being said, I think if a scale boat can run 52-54 in race trim and you drive a good line, you should be in good shape.
I think if you go to our club site and then go to race schedule and then back to the year 2001, then to the Governor's Cup you will find the details.
http://rcunlimiteds.org