I've decided not to limit trainers.

 

Just, everyone who enters the gym must be a registered and current member.

This means if you and your friend agree to train you for $1,000,000 or $10 or $0, or whatever... 

It's none of my business. I don't want that money, really.

This also means, if you make your living as a personal trainer, just register as a member at Drifter's Gym, and you can train your clients here freely, as long as they are members too.

​

When you register as a member, you don't have to say, "I want to train clients here," you don't need my permission, you already have my permission. Do what you want, just respect the people, rules, and equipment.