The problem is the gear
ratio for long vs short runs. I've got 2. The normal 16" model is good for maneuverabilityand the ratio is pretty pretty close to 1:1 since the peddles come within 4" of the ground. The other is a road or COKER model with a large 36" tire and shorter cranks for speed.
The trick with unicycles is learning
how to pull the rip cord and bail out without doing a face plant or breaking your wrists. Speed is not your friend. Luckily I learned all this at 8 years old.
Almost 50 years later I can still ride them but wipe outs hurt a LOT more than I remember and last a LOT longer.
And that's why I park them next to my GasGas Trials bike. None of which should be ridden on a bet after drinking.........