I have a large piece of rock in my yard. Well it's massive. Over 14 feet long and 7 feet tall. I am guessing it is limestone. Maybe granite. Either way I only have one spot for a slackline and I would like it to mount to the rock safely. The rock is backfilled on one side so I cannot place anything around it.
So far I have found rawl bolts and stainless steel bolt hangers and a properly rated carabiner. Are those suitable to be outside in weather 24/7? I want this to last for years and years. (Just the anchors, slackline will be removed) Rawl bolts are also typically used in climbing where they see force going perpendicular to the bolt, whereas a slackline would be all pull force parallel to it. Are rawl bolts good for that?
Looking for alternative suggestions as well. Ideally it would have a fail safe mechanism so if the bolt ripped out you wouldn't have a piece of metal launching at you very fast. Like a separate anchor point in the ground next to the rock attached to a chain where if the anchor failed the chain would catch it. For rawl bolts it would be able to catch the bolt hanged and carabiner, but if the bolt itself was pulled out there would be now way to stop it from flying across the slackline.