I decided to upgrade the control system to the SHADOW system which uses the Sony Playstation 3 Move wand controllers. These are very easy to hide and have a ton of buttons and options.
One of my favorite features is using the ‘L2’ trigger as a throttle for R2. Instead of simply switching between low speed and high speed, you can ramp R2 up by pulling the trigger and it works like a gas pedal. The more you pull the faster R2 goes. This has worked great in numerous occasions.
Thanks to Knightshade on the Astromech forums for all the time and effort to develop this system.