Did the Dr. Attribute your back condition to the tool belt? I obviously want to protect my body for future use but its highly impractical for me to work without a belt. I guess I'm searching for a modest in-between. Just imagining the Dr saying, "welcome to asking too much of your back" ticks me off. The human body is capable of quite a bit. A propely worn belt should be a burden it can bear. I can deadlift 500 lbs. I imagine I can handle wearing a toolbelt 8 hrs a day. Stretching helps a lot too. Maybe you felt the same though when you were a 27 year old whippersnapper. Get that back better!Get a toolbox, or you'll be facing the same as me, I was just diagnosed with a bulging disk. I couldn't figure out why it was so painful to get out of bed. The Dr smiled and said, welcome to asking to much from your back for too long.
Until a year ago, I was the same guy with all the tools one my belt, now I struggle to even pick up the paper every morning.
Just my advice to you. I wish I had listened to all those fine journeymen that I trained under through the years. Hopefully it is heal-able and they caught it in time for me to be able to work in comfort again.
Best of luck on that tool belt idea.