ive read your W$WSF number should be around 30-35. so, you shouldnt be so disappointed.

and if you are aggro enough, your WtSD number wont be high, either...you wont be letting it get to the river. you dont want it over 35% thats for sure, thats where i consider you a call station, and start value-betting you until you raise me back...knowing you'll take your underpairs WAY too far.

just something to keep an eye on.

and if worried about predictability, do like Harrington says, and start calling when the clock gets to the last ten minutes of the hour... that way you are raising most of the time and calling a little...just to let them know you will trap them.