We had a guy here in our local club that just used a simple office chair that swiveled. He ( Marvin, I can't remember his last name) had some sort of leg issue that really impaired his ability to stand and walk normally, but he could drive himself to Buder Park get out the office chair for the center of the circle, another folding chair to sit in and pit, and his launching stooge. It gave him immense pleasure that he didn't have to just sit on the sidelines and watch, and didn't really need anyone's help if he wanted to get a flight or two. He tended to crash a lot, and wasn't that great at repairing and building, but he was where a lot of other club member's old models ended up to flown some more use out of them before going to that great hanger in the sky!! Marvin 's condition eventually took him from us but he sure gave a lot of us a lot of inspiration to know that we CAN keep flying as long as we want to. Some one else here on the forum, in central Illinois somewhere, has a special built chair also. The seats of office chairs swivel very well, and a decently trimmed airplane will pull you around just fine. Use your feet to help get started and stop to change directions. I remember Carl Shoup flying from a wheel chair with his leg in a full cats at VSC one year. It just takes some effort and the will to succeed on a person's part to get out there and do it.!
Good luck with it John!!
Type at you later,
Dan McEntee