I agree on this one. Few bikes run the long course because it's only a small percentage of bikes that can break 175. The guys running the short course were frustrated with the wait, while on the long course I don't think we ever had to wait more than about 10 minutes.
But I'd also add that you probably need to lock the number in, whatever it is, because particularly in bad salt conditions where traction is limited, the extra run-up can be an advantage. Wouldn't want a situation where someone set a record that he was required to run on the short course, and then the next year someone takes it away because the rule changed and with that speed the new guy was able to run the long course, got an advantage, and took it away.
But since the record book is essentially empty, the opportunity to change the number is there.