I was counting a long shot side bet at a non-BJ game one time. The pit boss asked if I was using a card, and I said no since I had been backed off playing BJ rated there before. After I hit the side bet the first time the pit boss said he needed to see ID to make sure I was 21 before paying me (It was a very large payout). The other players at the table told me they had never seen that before.

I gave him my ID, he entered some stuff in his computer, and although they did seem kind of paranoid, I never got any real heat. Their paranoia seemed like it was mainly because I was making really large bets.

Should I have refused the ID and requested a gaming agent?

I also wonder if I will be able to go back there and do the same thing again. Info on counting that side bet can easily be found online. It seemed like they had no idea what I was doing while I was there. But since they were paranoid, I would think someone would have looked it up afterwards. Do you think they are likely to share info with nearby casinos or back me off if I try it a second time?