This is all so ridiculous.
I have been a YMCA member for 30 years.
I have never once visited a YMCA where someone was not either seeking gay sex or having gay sex. Not once. In at least three countries and at least twenty cities. And sometimes, it's the staff, not just the members.
Not. Once.
Have I made that clear?
Not. Once.

PS: I also hold a membership in another major health club chain. The same is true for that one as well.

What does this tell you, America?

But it isn't always cruising that gets you busted. Just wearing pride jewelry and going into a public john can get you busted. What about when a trans person is just going down to the store and gets busted for 'walking while trans' AKA prostitution?
It isn't just to have a story ready when you are cruising but be ready for a completely fabricated story.
Be ready to stay calm, document everything, ask for documentation and contact an attorney before you answer any questions or agree to anything being presented as the easiest way out.

It's excellent advice, Alex. The problem is that when you are confronted with a police officer and arrest occurs or seems imminent, there is an almost overwhelming impulse to attempt to explain away your conduct. Because you are not thinking clearly, and are well into the fight-or-flight response with adrenalin pumping, the explanation often sounds like a confession. Keep in mind that the legal term "confession" does not refer exclusively to a confession of guilt, but also to a confession of facts that can include the following: placing yourself at the scene of the crime, confirming that one had the opportunity to commit the crime, confirming that one took actions that can be interpreted as criminal, providing a motive for conduct that can be interpreted as criminal, and providing an explanation of intent that can be interpreted as criminal. The classic example is the suspect who, when accused of committing a robbery involving a shooting, says "I didn't do it, Joe was the shooter." That's a confession, not of guilt, true, but it goes a thousand steps towards guilt. I remember hearing the tape of Larry Craig trying desperately to exculpate himself in conversation with the police officer at the station. Every word he said tightened the noose. An innocent person doesn't need to explain - circumstances show his or her innocence. The more a guilty person tries to explain away conduct, the more evidence the police have to demonstrate guilt. The police also have many tricks to get you talking and keep you talking. An experienced police officer has observed hundreds or thousands of people in an arrest situation and know exactly what guilt looks like and what innocence looks like, but you don't. It's like taking candy from a baby. Good advice and all intelligence fade when you see the handcuffs looming and the open cell beckoning. The hindbrain takes over. It's all well and good to say "don't talk" in the light of day as a free person. Try remembering it when you're cornered.