egovenatus
Contributor
As a former lifeguard, certified pool operator,instructor for various water survival and other skills in the military, and long time diver I'll say it's always best to have another person in the area that is aware of what you are doing and knows what to look for if something goes wrong.....but to echo what others have said here, there is nothing wrong with practicing skills by yourself in a pool or in open water (in my opinion) for that matter. It simply comes down to this, know your limits and what you are personally willing to risk diving your profiles/practicing your skills. I would kill to still have free pool access!