Liability: Gyms and Pools

[Kyler J Sloan]

I will soon purchase my own rental property, and would like to utilize my gym equipment (i.e. I am "house hacking"), but do not know how much of a nightmare this has the potential to cause in the case that a guest injures themselves using it. 

Would it be possible to create a separate LLC for a "Gym franchise", and include every future home gym under it, given that each are located distinct from the house (i.e. a single car garage)? Would the garage and the house need to be on subdivided land?

Then, could I have each guest sign a liability waiver before being granted the keys to the gym? 

If I would also like to add a pool, could I not simply ensure that it is placed on the same land that the gym is on, and include it under that LLC as well?

Thank you in advance for any feedback.