heres my post from the other thread, just thought it would be good to bring this up in both threads.
the potential problems i have thought of for a parkour waiver would be:
1. not legally binding enough. if you look at the waivers you have to sign at the gym, or pretty much anywhere that you could hurt yourself, they are pretty long and specific. they make sure that even if you are missing vital parts of yourself, they can just shrug and say, "it was in the waiver".
2. the Minor factor. assuming that many of us are minors, im guessing that we dont have authority to sign a legally binding document about our personal safety. thats why we need parent/guardian signatures on waivers also.
3. the owners have no reason to let you use their property. They dont NEED to, unlike a gym, where its what they are there for. why would they let you on the property even if they weren't at legal risk? negative PR and thinking you are reckless or want to be a stuntman would probably turn them off to this. they might just not like what you are doing, or be concerned for your safety in a non-legal way. but education like Minnesota parkour's pamphlet would help.
but other than that, i haven thought of anything else. but im just a teenager, so i dont claim to really know a whole lot (or anything really) about property laws and such.