My question is, on all of these hookup sites: secret benefits, adult friend finder, sugar daddies, etc., etc., etc. Are there any tells to distinguish the ones that are professional providers?
if you can get a photo of them, you can use it to see if the photo comes up on places like EROS, etc.
Yes, there are pros on Seeking (and the others). But so what?
If a POT works a job charging $300-$800 an hour for sex is willing/eager to go on a multi-hour date with a SD for the same money, does it really matter?
And look at this from her perspective. Some hookers are certainly looking for additional johns from the site. Those profiles typically don't last long. But some are actually looking for an older guy for an actual (though compensated) dating experience. If she wants to be treated like a sugar-baby, then treat her like a sugar-baby. You can have wonderful dates and BCD times with anyone that you like and that will agree to sugar terms. As long as she doesn't treat you like a john, go have fun!
I have two SB's now that escort as a side hustle. Granted, one is an A-list porn star, and the other is a former porn star. We have wonderful multi-hour dates and both enjoy the sugar vibe.
Having said all that, I will attempt provide specific answers to your specific question. As noted, do a reverse image search on all profile pics. Do a google search with the phone number (or whatsapp, etc.) and email if provided. Finally, look for hookerish language and terms in her profile and message text; PPM framed as per-hour, outcall/incall rather than who can host, asking for screening info vs getting to know you, an untimely rush to go BCD, and of course, any demands for money in advance. Sugar Rule #1: NEVER send cash in advance. Rule #2: Go back and reread rule #1 a thousand times.
Life is good
The Cat