It worked for me as well
Ah,sry my mistake! Much like Bizman I used bungie cords to keep my chair from moving until I came up with the plywood base. I decided I wanted my controls mounted to my chair arms to be more comfortable and made some mounts very similar to what Mntman uses,search help and training for a pic of his mount system it can be adapted to any chair. In the end I bought a bentwood chair and mounted every thing to this wooden chair,placed it on a plywood pedestal and put casters under the whole thing so it can be moved out of the way easily.
If I posted pix I'd post some of my chair so others could use some of the ideas!
Oh and my Pies are turning Japaneese!