There are several dd's related to this Hendo Hover board and I have posted several dd's in my invention section on this issue.
IMO The company that makes this is just trying to sell a simple spinning magnet, fake anti-gravity trick that any school kid can do, and has. There is no way to make their hover board work with the the technology there using and they know it.
This is sad, because actually trying to make something like this work, could be a great benefit to mankind in so many ways. (other than flying boards)
To make a real hover board work...approved by Michael J Fox, you need to forget about what anyone has done in the past...and do it yourself.
CLEAR YOU MIND and let the universe speak to you.
Dreams are a great way to make this happen...like you didn't know :) RECORD YOUR DREAMS anyway that works for you.
Here is what my dreams told me on this issue:
The spinning magnets trick need to go, huge waste of energy that goes no where. Relying on surface that needs to conduct electric is ridiculous, and seems to confirm that Hendo is selling a simple magic trick in a 'white box'.
Something much simpler does seem to work and it involves Fe, Hg, simple sea water and just 2 Swarm Satellites (see invention section) 20 X 10 cm board can support 15 kg's 2 cm off any surface for over approximately 12 hours (with the correct sea water solution)