I'm not a big fan of mathematically calculated pivot points, although it seems like so many people use them, I may give them a look-see.
I trade the e-minis, and just look at the O-H-L-C levels from the day-session only and all-sessions charts for the last day or two. I also look at the daily chart for any highs or lows, as well as groupings of opens and closes that have occured in the past several months. This seems to work very well for me.