Max, my track-only Caterham and I visit Putnam a few times a year, typically with 10-10ths, and I hope to get to Mid-O at least once. No passenger seat and not street legal so it would mostly be a audio-visual experience.
If a visit to Cincy were planned, I'd be happy to let a prospective se7en owner take it for a short solo spin around my secluded neighborhood streets. Or if you see me at Putnam, a spin down the track entrance road and back should be feasible, ditto Mid-O. Be prepared tho, for total sensory overload:)!