I use the "joystick" knobs from this page:
http://www.qualityrcproducts.com/pro...tterknobs.html

and the transmitter tray from here:
http://www.urgear.com/cgi-bin/store/...1&ck=&cat=RRAT

Due to spinal cord problems I have very little feeling or range of motion in my hands and arms. I got the transmitter tray because I couldn't keep my hands on the sticks without something to support them. When I found the web site with the custom knobs I ordered them and they do make a difference.

Even with these aids I may always need to be on a buddy box. Since I cannot always feel the sticks I have to glance down at the transmitter occasionally. I have "lost" the plane before and had to ask my brother to take control. For a long time I was sure I'd eventually be able to fly solo but now I'm thinking it might not be a great idea from a safety standpoint. Crashing the plane is certainly a $$$ issue but I'm more concerned about safety.