A short while ago I shared a DIY concept of mounting fiberglass rods into a backpack for supporting heavy stabilizers or gimbals like the DJI Ronin. Although mine was just a working concept, Vimeo member Coriolis-Visuals went all in on his build putting together a very clean and functional support system for about $90 bucks (or less) in parts [minus backpack].
In order to pull something like this off, you'll need a backpack with a waist support and preferably a chest strap (as seen in the video). This prevents the backpack from pulling away as you flex the fiberglass rods. It's unlikely you'll ever be able to break the fiberglass rods, but in this build a Braided Hose sits over the rods adding a layer or safety. The use of quick adjustable lashing straps was a great idea to position the gimbal up high or low. Great job on this build and thanks for sharing Jim!
Obviously you can modify any of the build suggestions, but if you want to take a look at my original video showing how I made my prototype version visit the original article http://cheesycam.com/diy-gimbal-stabilizer-support-backpack/