Psychodad, if Yappi isn’t good for rehashing the same questions, it’s not good for anything.
I have coached at the regional meets at Troy and PN, and seen both in a variety of conditions. I have coached at both of the other courses, but never for the regional. Based on the data I keep for a regression model to compare courses, this past weekend was the fastest I have seen at Troy and Pickerington. I will note that my model only includes teams who ran in the same meets that we ran, or that the baseline schools i compare us with ran in.
I used my model to with this years data included. In general, for a 16:45 boy, the Tiffin course is about 22 seconds fast than Troy, which is about 8 seconds faster than Pickerington, which is 20 seconds faster than Boardman. [Note, this has actually changed a bunch in the last four years. Also, I threw out the 2021 results, because all the sites were so messy it skewed the results.]
A more interesting conversation is which site is the best predictor of state meet results. I have found Troy to be closest for that. One interesting fact I have seen is that the closeness of the regional race has a negative impact on state meet performance. In simple terms, if a team had to run a great race at the regional they are a little less likely to perform well the next week at the state meet.