coachjwb
Love this game!
I use the Martin wrist coaches for the customized systems I do for teams as well. I do a 5x9 grid on youth cards, and 5x12 on adults. Keep in mind the more combinations you have, the more effective. And yes, you definitely want to laminate them. I can usually fit in a few defensive plays on the offensive cards, but for the teams that have a lot of signs or pitch-calling as well, I recommend they be laminated back to back as Bald notes above. I also use colors to highlight the rows and columns to make it easier to read. If you're interested in more info on having a system done for your team vs. doing it yourself, feel free to e-mail me at jffbaker3@gmail.com.