Waldorf is absolutely right in his advice and thinking.
It's almost impossible to NOT get this right.
A little patience is needed.
After-all it just goes under your arm (after adjusting it to suit you) and the rest is EASY.
Just tensing your muscle can activate it - so you don't need to FLAP your arm - as you so bluntly put it. No need what-so-ever.
Take a look at our demo Videos - no flapping of arms, infact not even a hint of awkward movement.
Please give it some patience, its not difficult.
However, if you've given up on it - then that's obviously up to you.
Sorry you feel that way.
Shame though, because as you say it is a great idea - one that is being used and praised by thousands of working magicians around the world.
Cheers!
Shahid Malik.
www.magigadgets.com