CHAMPION Decathlon (N178BC)

That's an 8GCBC "Scout". The Decathalon has a semi-symetrical wing with no flaps.

Interesting shot with the tail off the ground on a taxiway...Were they using the taxiway as a runway for light a/c?

This shot is on runway 27 at Oshkosh. White markings are used on runways and yellow are used on taxiways.
They do use the taxiways for takeoffs and landings on runway 18/36 but not on runway 27/9.
Nice shot of this Scout with the tail off the ground on rollout.

BL8 is the correct identifier for the American Champion Scout. Don't know why the system writes "Decathlon".