...has served me well for years, even though I haven't had an SO for a while. Relatively cheap, easy to set up without giving personal info and simple to dump every few months (or when needed).

Others have talked about software programs to take the place of a burner phone and activate on their daily phone only when they need it. But being an old dinosaur (reference the handle), I don't trust that some program won't cross-reference playtime contact info with every other facet of my life.

KISS principle still one of the best guidelines around.

with a creative name, address (where you want the AC), and buy reload cards with cash. Totally safe.  

I thought of using a burner phone, but for me it's a pain to carry two phones.  There are many apps that give you a free number for calls and texting.  I use that and after I used it I just delete the number or call.  It's easy and there's no need to worry about a second phone to hide, etc.

A burner phone and dummy account linked to it. I guess it would depend on how often you hobby. Meaning, minutes, e-mails and text messages (usage).

I suppose the level of discretion needed varies on your situation. As a provider, I use a separate number hooked up to my personal cell phone. All calls/texts go through that number, but it’s easier for me (and in my situation, less noticeable/suspicious) than a second phone.  

Are there more secure methods? Certainly, as mentioned above. But as I am not in a situation with a SO, this suits my needs just fine.