It is a difficult process and probably doesn't pay that well when you figure all the time it takes.
What I am finding now is that many agents are steering buyers away from the short sales with their negative comments. It is a real shame since short sale processes have improved for the most part.
To answer your question in my situation; I can't put all my effort to a short sale when I can find a motivated clients Seller/buyer that is willing and able. I don't steer them into non-short sale homes but I made them understand the process.
Real Estate!!! lots of learning everywhere and it gets overwhelming that sometimes we forgotten ourselves..