Hey Chief. I've seen your skill set in leather grow leaps and bounds over the years. I have little doubt that you could fix or recreate this and as an engineering exercise I'd say go for it. The other side of course is the legal side of "what if" this generally why people have waivers. Waivers are in my experience. Which is likely more experience than most (I work and teach and train in extremely high risk areas where people get hurt or worse on an almost daily basis) is that waivers are not worth the paper they are written on as waivers are built in the premise that one has the knowledge training and experience on the thing being signed off on! And that all reasonable precautions have been taken. In short it's often fairly easy to prove negligence which voids the waiver. In the safety business there is a reason my hard hats and body armour and harness get changed out every 5 years...even when it's not needed to do so. As I said I believe you have the skills to do this and should take it on as an exercise.