counting spanish 21 S17

I haven't read Katrina Walker's book yet on applying the Hi-Lo count to Spanish 21/Pontoon, but I was wondering if there was a way to apply the Easy OPP count system to Spanish 21. I'm no mathematician, but I'm sure there is a way to apply a level 1, non-conversion counting system to this game to make it easier to beat. Can anyone add some serious input here?