Craps Master said:
I think the common sense definition will suffice. Speaking of which, how do you consider yourself a professional blackjack player if you have very little casino experience under your belt. Have you made a living hustling bonuses in online casinos or something? Or are you just new?
Again, it just really depends on what the definition of pro is meant. For example, I consider myself a pro when it comes to straight counting and hole-carding only(since I know, dealers hole-card strategy). And even though, i have barely won a nickle in actual casino play, (due to no Drivers License and lack of finances) i stiill consider myself a pro21 player. Trust me, if I was gonna lie about considering myself a pro, i would'nt be telling the truth about my lack of casino play. This is embarrasing.
I consider myself a pro, when it comes to straight counting, play-all and being able to win continously on a constant level. Everything from the count i use(ao2) with ace side-count and ace params, I can bring my PE up to around ..70 easily.
To adjusting your bets, to compensate for the rules in play, with betting indices. Any # of decks in play, & using different indices, with different rules in play. Falling back, to full kelly betting, when and if bad runs hit. Which RA indices to use, depending on what level im betting and what my RoR looks like and what risk im willing to take. Upsizing and Downsizing my bankroll at a comfortable level im willing to accept, when good and bad fluctuations hit. Getting more aggresive as the # of players increase. Can count any direction, with the fastest of dealers. Optimal departure points for MD. Compensating for Floating Advantage in both betting and the play of hands, etc, etc.
IN PRACTICE: When you can sit, in total isolation for hours on the day and take 10,000 and turn into 1million in about a year or so time, against a realistic 2deck gmae(-.37)3plyrs,1:10, 67% while still being able to focus, ride out 60-70 hour losing streaks on occasions, and succeed at this level, (even if it is, in your own home) is NOT something everyone can do.
However, since ive never done this in a casino, its really hard to say im a pro. Maybe perhaps, but an unsuccessful one at that. You make the call. Cheers!