Yes, there are hover boards for sale.
I have seen vendors with them from time to time. Look at the South end near all the new stuff
Yes the ATV shop sells them
They do have them on Saturday not Friday a lot of booths closed on Friday's
I have seen the motorized balance boards around $200
Did not see any when we were there two weekends ago.
Have not seen
Not to my knowledge, I didn't see any
Thanks! Your answer is awaiting moderation.