I purposely keep people at arms length because they don't realize the work and concentration required at AND away from the table. Now you've got some yoho that wants to watch you play, come up and talk to you while you play, and/or teach them to play. O yes, let me teach this guy (for free) and maybe I will get a warm fuzzy feeling. So I'm about as far from a blackjack groupie as you can get.
But there is always that guy in the sportsbook that inevitably had the 17 point dog straight up the upset of the season. Of course, no one ever sees him at the window or the ticket. And by mid-week is wanting to borrow 60 bucks for a battery to put in his van which he sleeps in - with his cats.
To this type of guy the saying goes, "next time you have a thought, let it go."
Now the guys the I presume are making money are very hard workers, focused, and disciplined. They wouldn't give two balloons about "vouching" for anyone. They never ask for another opinion or offer their opinion. In fact, it pisses them off when bothered. If you strolled up and ask them their earnings? They'd probably take a swing at you. Giving or asking for picks? A huge no-no. Oh, I can hear the roar of laughter now, "hey guys, Tater here thinks we should set up a boot camp and teach people how to handicap."
It's night and day to spot in person. Evidently, not so clear for some to spot on a forum or the internet.