Try shuffle tracking/ace tracking (counting, keeping track of tens and aces clumps, can use chips to help). Even with two pass shuffle / 6d shoe at mi local casino, im able to track. Idk how calculate the edge on this, even if its possible calculate, but im having fairly nice sucess since implemented at my only local casino i dont want to lose. Max bet from 1st hand of a new shoe when there is interesting clump and me or some else cut where supossed to cut. Is sad when other player cut and send the clump tracked behind next shuffle. Some times i meet another counters at the table and i dont think they have clue about my play, maybe only bc of deviations, but casino will have hard time to catch what im doing.