You may want to consider using the SCUBA harness type setup that was used on the OT Boba Fetts. It takes some of the weight off of your shoulders and transfers the bulk of the weight to the hips, which helps a lot.I have tried two setups so far. One is a harness from Man of War that I use for a Jango Fett setup. It works great on that. But the back armor and connection points on the Cobb pack are causing it to hang differently. I had to run the strapping differently from the pack to the harness. I also tried modifying a weight belt harness and that has been a dismal failure. That wants to pull up under the arms and cuts the blood flow off.
Check out how PinkFlamingos6 attached his jetpack to the back plate here:That type of SCUBA harness would do the trick, but the screen images for Cobb show none of the previous attachment methods that I can see. It looks to just be stuck to the backplate. That same type of magic attachment through the series where someone just wings the pack on their back and it sticks. Maybe that is my answer. I may see if I can bolt the jetpack to the backplate and support the backplate instead.
After I finally captured a good screen image of the pocket I felt they had left the original in place. They removed the canvas strip that runs vertically on it and drew a design directly on the remaining pocket to cover the thread holes left from removing the canvas strip. I used a white fabric marker to directly draw the design on the pocket. The left pocket I created by removing the existing pocket and used the material from it and the pocket removed from the leg to create the two patches. I used the same ink from the pen with a damp sponge on the left pocket to create the camo patern.How did you do the back right pocket design?