Suggestions for tracking performance While at the casino?

[Grizwold]

I like to keep track of my performance in each session, and when I get home I input the info in to StatKing, which gives nice options for tracking running performance of different games/stakes or individuals games or however you choose to filter it. So when entering info in to StatKing, you specify the game and stakes you are playing, the amount of time played, and your net income or loss. That is the easy part. It is especially easy to keep track of performance after a session when playing only one table. I sit down, make a mental note of what time I started, and I know how much I bought in for, so when I cash out I see the time and how much money I have and do a little math.

I'm interested in more complex sessions and how people keep track of that. For example, sometimes I play at a table until it dies, then I may go to another table of the same game and same stakes and buy in for my normal amount (in stead of continuing w/ the number of chips I had when my previous table broke.) So now I have a number floating around in my head of how I did at the first table, and after I finish at my next table I do a little more math. Keeping that first figure in my head kind of becomes tedious after sitting at my second table for hours. And I am fortunate enough to have only played the same game/stakes for that particular night. What about when someone is playing 2/4 LHE for 3 hours, then plays 3/6 O8 for 2 hours, then maybe some 3/6 LHE or whatever. Is there an efficient way to keep track of all those number while you are still at the casino? The only thing I can imagine is keeping a small notebook and pen in my pocket, but like George Costanza says "I'm afraid the pen will puncture my scrotum." I have not had any problems w/ tracking my numbers so far, but I can see it will become a problem for me in the future since I am expanding my horizon and my BR is allowing me to play more various stakes. Is there any efficient way to do this?