re: Poker & How much you should you invest in chasing a hand?
Your numbers aren't a million miles away, but I would think that common sense tells
you as the short stack, and already in the money, you should just have open shoved your 8's?
If you limped, were forced to fold and was then too short to make a comeback, then you should have just stuck with your 8's regardless and either tried to buy the pot, or take a shot at the 2 outer. These 'rules' can be implimented in most situations, but they require a dab of common sense too.
As far as straights etc... With a gutshot on the flop you've a 3 outer with 2 chances to hit, so 3/47 then 3/46 (47 cards left after your hole cards and 3 on flop, then 46 cards with turn on the board) comes to roughly 8/1, or a 15% chance of catching. Odds are doubled for an 'open-ended' straight. With a flush draw, your looking at just short of a coin flip on the flop (40/60 against?). 9 cards out of the remaining 47 will make your hand, and you have 2 shots at it with turn and river. making you around 2.6/1. I will usually make a reasonable bet on the flop with a f.d. but not after the turn, where your odds are far lower at around 20% (over 5/1).
I hope my maths are right, i'm still learning pot odds
etc, but i'm getting a basic grip of them as I go on. Everyone feel free to correct me!