With Pick 3 & Pick 4, I believe the single most important thing when bankrolling is making sure that you have covered enough combos so that you have no choice but to hit, at some point, *before that bankroll is depleted. That is key because it keeps you in the game by keeping your initial up front money in your pocket. When you don't hit within a certain amount of plays, that money's gone and you're opening your wallet again to front more money. *Quality of combos goes hand in hand with total combos, okay. With Black Jack, you cannot cover enough bases, so to speak, to ensure a win. You're at the mercy of what's in the deck, what the dealers throws out, and what you get when you request a hit. With the Pick games, specific things must absolutely happen that you can see before hand and reasonably control. Illustration based on Pick 3:
Total Cost Per Play @ .50/number = $10
Total Number Of Desired Plays = (10)
Total Cost For (10) Plays Duration = $100
This, of course, means that you must hit at least box for a $40 payout on your 4th play, maximum, because anything beyond that will require more than a $40 box hit and could become more difficult. *Every time you do not hit, to a certain point, it means that the 'quality' requirement of the hit becomes greater and greater just to recover money, break even, or turn a profit. If you go dry for (8) plays, it means that on that 9th play you'll require a straight hit or a multiple combination of box with pairs just to win enough to cover the current $90 deficit for (9) plays and zero hits. Make sense? This is all about numbers and only numbers. Math plays a paramount roll in accomplishing such a feat....and is well worth it. Good luck!