Bob H in NH,

I can see where a method of writing the number instead of punching the number could help in eliminating an unintentional mistake.

If one of the score keepers writes or punches a 10 on his score card and the other score keeper correctlypunches or writes a 5 on the duplicate score card the results will be the same. You will get to the end and find that there is a conflict, sothe higher score is awarded and 5 points is gained.