@gregc You should get a wheel mate! I really feel bad for you! I know you may be enjoying it but trust me a wheel would multiply that by 10!
In different circumstances I would mate, but the couple of runs I've had this week were quick 15-20 minutes at my desk at work before leaving late, and tonight and tomorrow I'm in hotel rooms. My laptop and the Rift are reasonably portable - a wheel just isn't practical for me at the moment - or at least it wouldn't get anywhere near enough use to justify getting one.
I wouldn't be taking part if I didn't enjoy it (a lot!), it's all good