At our house (which we owned) our son and his friends along with some others we didn't know would practice Freestyle Motocross tricks (back flips, etc. they were pro riders) One of the fathers of one of the riders was also a personal injury attorney and he wrote up a liability waiver that we had parents sign, or the riders if they were adults. 

I'd be interested to see if their renter's insurance covered anything to do with it, injury or damage related to the pool. 

Also, if you rent it out and it is not permitted, you will be held liable for any injury, damage, etc that takes place in that unit.

No need for the liability that comes with those injury machines.

On a personal auto policy there are two ways the Liability can be written:1. separate limit for Bodily Injury and for Property Damage2. one limit for the combined Bodily Injury and property damageThe lowest required limit for your auto policy is likely to be, for a personal umbrella is $100,000 per person/$300,000 per accident for Bodily Injury and $100,000 for property damage. 

I will answer with the worst scenario I can think of, without putting too much time into this:You get shot to death while trying to evict a deadbeat tenant whose methlab exploded resulting in an injury claim against you personally, all happening right after you discover lapsed insurance on your over-encumbered rental house with a balloon payment due next week.I guess there are worse thing that might happen, too.

If your tenants get barbecued from a basement fire  caused by your unpermitted electrical work or suffer any injury living in a space not zoned for occupancy, your home and freedom are likely being taken. 

Also anything that is not secure can not be placed somewhere where it can fall and hit someone or something causing injury/damage.

A PM would have protected you from such self-inflicted injury.

You can look up, Member of LLC May Be Personally Liable For Lead-Paint Injuries (Md., March 22, 2010).