A while ago I injured my shoulder to the point where I couldn't raise it enough to hold my saitek. I wasn't going to let this stop me getting sim time in, so turned to an XBOX 360 pad, given I could rest it on my legs without moving the shoulder at all.
It worked a treat for FSX and a few others - I'm not sure I could fly blackshark with it though, the small movement range of the sticks doesn't lead to precision at all.
Anyway, one thing that worked a lot better for me - setting the 'bumper buttons' as the yaw axis. I am assuming by bumper buttons you are referring to the analogue buttons (LT/RT).
It's a lot easier to hold a slight rudder offset for say cross wind landings than trying to hold the small joystick in a precise position!
One other thing I've done with the 360 pad is to use it with my Saitek aviator for handling optics and weapons deployment (obviously this works better in DSC:BS as you're normally in a hover by this point).