I allowed one of my "Young Eagles" to do some of what you call "Ups & Downs" once. Her two friends in the
back seat became pretty queasy in short order and were not pleased with her. That sort of thing got removed
from the menu for my flights.

Yeah, up/downs can get pretty ugly, if done too often.

My kids usually beg for one, ask for one more, and then are happy not to do a third, especially when it's
hot.

I like the pencil test.

Whats that?

Hold a pencil up, do a Humpty-Bump, then let go and watch the pencil
float in the air.