Well Sharking is Sharking be it between serious player, or in a $5.00 Entry Fee Tournament.
My definition of Sharking is any thing an opponent does to me, or I do to an opponent to distract my concentration on the game of pool i am engaged in.
List to include, but not limited to.
Talking to me when I am down on a shot
Talking softly about me or my shot to a third part when I am down on a shot
Smearing Chalk all over the rails when playing
Asking me during a game about my equipment
Walking away from the play area during a match
Like I said any action, talk that will distract me when I am engaged in a match