Recently, I was playing SD with two others and was enthused to note that the pen was 70% and better by the time the last card was dealt. It took me a while to realize that the P70 did not help make my betting decision at the beginning of the last hand since the hand began at about P50. So, am I correct in understanding that the value of the p70 was in making playing decisions during the hand played and not pertinent to the original betting decision?

Should I recalibrate when the pen is good by judging what it is at the beginning of the last hand rather than at the end of same? Does it matter?