@Simon Thanks for the feedback, since the instructions states it is not for under 13, I haven't tried with younger than 11.
I confess i am scared about that much power for small kids.
I think the danger is not about falling (small kids are used to that) but having a finger or whatever in the wheel or being hurt by the board.
I'm six foot, I feel like I'd like a longer deck, seems like it would be more comfortable, I already have my feet wider than the center of the footpads. I do spend a lot of time on hills so that might be a problem. I haven't noticed that I'm coming anywhere close to the ground on hills, though.
@matto That's what the 1-second delay is for. Seems to be just enough time for things like what you're describing. The main difficulty in curb jumping is just keeping your balance when you hit the ground, not the board shutting off.