on these flimsy contrivances - and simple physics...
I deem 55 mph on one of those dinky minimalist "tires" (tyres) - akin to 130 mph down The Grapevine (er, the SoCal one outta LA, that is) on a proper motorcycle. Only worse.. when you consider the huge tire dia. and flexibility of Everything. And that dinky patch.
Well.. it's gotta be a good forced Attention akin to meditation to keep the sucker properly under you. No daydreaming, y'hear?
As to dirt - yes quite: you say that some don't get it about lowering the seat? A good primer for illustrating that is: English Trials, usually on single-cylinder machines with Lots of v.low speed torque, smoothly applied with the skill of a dancer.
But on a m/cycle - the pegs you stand on (to lower your CG as much as possible, natch) aren't moving!. You Never "sit on the seat", at any height, for same obvious reason. Are you saying that bike riders do Not (well, try to) stand on the pedals ??
If they 'sit' - sounds like lots of fall-offs. Hmmm I see a tech mod needed: a switch on handlebar + a solenoid which locks the pedal crank solidly, allowing use of body weight on the feet - to exert proper English as Newton intended. (Obviously you can't do this Up-hill. D'Oh)
(Ugh - a bizness opportunity)
Ashton Da Vinci