Larry, I remember when I hurt my back last summer. Took 6 months to feel normal again and I still have to be careful. Although I like working on side projects, I can just stop and start whenever I like. But with a hurt back, I can hardly move gear, especially 60-70lb+ boxes off the floor. Also I would have a tough time turning my hobby into a business as the enjoyment of the freedom of it would dissolve. Even now I prefer to spend that little freedom enjoying content rather then fixing things and making comparisons.
However, I'm sure if your still selling things I'll be happy to give you business down the road