Parlay betters interested in parlays may want to use a system based on historical data or streaks (thetas ones that yield more wins than losses over time) but without using complicated math or computation.
For example, if you can win $100 on 95% of your wagers over a period of 100 plays, then your overall ‘risk’ would be 5%. mamasboyct has great explanations on this topic as well.
This means that you could place 10 different bets worth $10 each for a total of $100 (instead of the usual bet sizes used by many who only wager $5 at a time) and still have less than 5% risk if you won each hand. This allows you to parlay using more money which makes your potential winnings greater too.
Note that this simplified approach doesn’t use common ‘risk reduction’ techniques such as martingale or doubling up on losses, but some people prefer to stick with the simpler methods anyway.
Even if you aren’t interested in drawing cards, it may be useful for gamblers to keep a few books about reading people around when they gamble even though most players try very hard not to read others while playing online poker or other card games where face-to-face interaction isn’t possible.
It is still possible to read someone even from a distance, however, and this skill can be put to good use if you want to keep from being cheated (or if you want to make sure that the dealer doesn’t cheat you).
If something strikes your interest, then it might be worth your time to study it a little more or see what other gamblers have figured out about it.
Most advanced Blackjack players will tell you that some of their biggest wins came back when multiple new decks were introduced into the game after long-losing streaks. This is because the deck becomes ‘shuffled’ before each hand, making it much harder for card counters and other professionals alike to predict an upcoming hit.