Raced my small tire, heads up, Nitrous Duster for years by myself.

Always nice when someone goes, but not necessary.

The bottle bath, flow tool, multiple bottles, easy access to sparkplugs, quick release fittings, quick release bottle holder, mounting bottle where you can turn on from drivers seat, big gauge to easily read bottle pressure, etc, all help.

Didn't have a data logger, but used a Dual FAST A/F meter to help with tuning.

Once I had a good handle on the tuneup, I would just coast over on the return road and pull a couple plugs to avoid having to be towed up and back.

Never had an issue turning it around between rounds by myself.

Won my class last year, and was the only Mopar in it!