When I had to go back to the neuro after using the traction for a few months he said something like "yeah, didn't think it would work but we had to try." The reasoning he gave for it not working for me was because besides my disks bulging I had huge osteophytes (big bone spurs or growths) and they were pinching the spinal cord badly. I would have to agree with gagabonnie, it made mine worse and moved me towards surgery faster. Of course, he didn't tell me up front that he didn't think it would work...I swear sometimes I think they play a psychological game with us to see if we are really in pain.
You take care, and become very well educated about
what is going to be done, it is your body so don't do anything that you aren't comfortable with.
Edited to add: Of course, I do know where you are coming from in wanting to try it....we all get to a point where we have had enough and will do just about anything for some form of relief. Just make sure you have him go over all of the pros and cons involved and tell him you want it straight from the hip, nothing worse than feeling like you were lied to afterwards.