Blackjack player rating -- how does this work?

Hi there, I searched google for a while but couldn't find a straight answer. I saw in one thread someone said essentially a blackjack player playing perfect strategy would be rated by the pit at less than a "normal" blackjack player. This seems very odd to me, since the pit boss isn't necessarily going to stand there and watch your play (even if he does, much of basic strategy is common sense--stay on 17, hit on 12-15 vs dealer bust). So unless you're playing the sucker bets on the table (which I may play when the pit is around/when I'm first being put in the system), or being wildly outlandish (splitting 10s, hitting hard 18s, standing on all 12s) it would take the pit some time to get to know your playing style.

Just wondering if anyone knows. Would the pit put in a % of HE for you? Would he "rate" your play from good to drunken slob? What?

Depends on the casino

Meadows in Pittsburgh goes so far as to give you credit per hand that you play and installed a dealer button that he must hit which basically tells the computer how many hands you play as opposed to the time-
Fast table you gets lots of credit - slow play and you get almost zero

One of the pits jobs is to observe and rate players. As most are lazy and fairly incompetent, this usually results in wild guesses on their part. Many players raise their bets when the pit boss is around, and avoid making AP moves with them around. Having dealers call out unusual moves is part of helping the pit rank players, as is the color up process.
All in all, it's a cat and mouse game with many players, in my opinion, wasting too much effort to get over on them.