I used to print my own BS charts,as there were only about thirty plays I wasn't certain of.Pitbosses asked to see them several times but after examining them,they were returned.Except at Bufflo Bills in Primm where the pitboss told me only laminated color coded charts were permitted.I offered to keep it in my hand but was told to put it in my wallet and leave it.
Awhile later,with a different PB and different dealer,I tried again and got the same results. Its got a great roller-coaster,but lousy BJ.