We installed the trampoline late in summer. I was not able to assemble it myself due to nerve issues in my hands. My father built it for us, and this is what he had to say about it:
Including inventory and organizing the parts, it took about 4:00 hours to assemble the trampoline. The hardest part was assembling the framework. It required a hammer and a pair of groove joint pliers because the pipes would not fit into the t-brackets properly. I had to compress the square ends of the pipes slightly with the pliers and then hammer on the t-brackets. The 72 springs were another challenge once you got past the first 24 springs. The last 12 were the worst. They required tremendous strength to align them in the holes of the frame and a hammer was needed to seat the spring in the hole. The screws for the netting poles were no picnic either. It was very difficult to keep the hole in the cap and the hole in the pole aligned with each other while screwing in the screw. As for the netting poles, one of us had to stand on the trampoline to push the last 4 poles into place while the other guided the pole into the bracket. Once assembled, it was very sturdy and safe. We loved its operation.
Tearing the trampoline down to store it or move it will likely involve a couple of hours. The carry bag was a nice thought, but the trampoline would have to be completely disassembled to fit in the bag. Most people will either find a cover to protect the trampoline when not in use or only partially disassemble the frame.
We have since removed the upper poles for winter and bought a cover for it. We have highly enjoyed using it when it was warmer and look forward to the warmer weather next year to use it again.