Yeah maybe, I'm just thinking that it would be wrong to expand on this particular setup in this thread when it might not be appropriate for what he wants to achieve, or more importantly the physical issues he may face in an aeroplane.
What may interest folk whilst we are waiting for him to get back, is this vid which shows the mount in use in a very awkward situation, in close woodland, it's very difficult to get some rigs through this sort of growth, and a lot of it was shot whilst running through the woods and other slippery and muddy uneven ground, so it's not super smooth by any means, but usable I think.
Latest Steady Mount trial
Perhaps a seperate thread? The limits of image posting here makes presentation of this tricky, so I may add to my articles pages with something instead. The place exists because of this kind of request following my building a camera crane.