What if there are only 3 people left and you are SB. The button folds. Do you call or raise?
...It would depend on how the BB has been playing. If they've been playing pretty tight, you'd probably get them to fold with a raise. If the BB is loose and/or likes to protect their blinds with a call or raise, you might not want be raising we marginal hands unless its a hand than can beat their calling hand range. In a situation with an aggressive BB, I'll fold marginal hands instead of limping or raising. Keep in mind you'll be OoP during the hand as well. The only exception is if the BB is severe short-stack and could be pushing with ATC, then my hand range is much wider and i'll more likely raise them all in with marginal holdings. Also, your image is a big factor in this as well. Your raise would probably get a lot more respct if you're a tight player than if you're loose.
I usually call or fold with any marginal hand and depending on the situation, might limp with a great hand. Should I raise or fold in this spot with a marginal hand? (K6o)
...Depending on what the blinds are and the stack sizes, I really dont like limping in the SB and letting the BB see a free flop. If blinds are still small, I'll just complete because a) its not costing me much and b) pot is too small to steal. I'd rather fold a lot of SB hands early on, set up a tight image, and then steal from SB when blinds are high. With big hands, I'd rather raise than let BB see a free flop because if they flop a monster, their strength is so well hidden.
Example: Say you limp in with A10 and 10,5,7 and your opponent is holding 57. It might be very hard to get away from your hand with TPTK. At least with a raise, you're either guaranteed the pot right there or if they call/re-raise, you can put them on a range of hands and make your decision according to how they have been playing.
As for K6o, its an OK hand 3-handed. You can beat out of lot of possible holdings BB might have. To raise in the SB with this hand would depend completely on how BB as been playing their blinds so far. This is definitely a hand I'd raise against a tight player, but vs a player who is likely to call or come over the top, I'll just let it go. Again, the exception being the BB is short-stack and is playing ATC. K6o still beats out a number of hands and isnt that big of a dog vs Ax or K7 or higher.
I feel like its a coin toss in that situation anyway so I might as well see a flop right?
...I dont get what you by a coin-toss. Do you mean its a situation where you either hit the flop or you dont? If so, thats true. Limping in with marginal holdings in the SB when blinds are low is fine. You're usually getting great odds, its costing a small percentage of your stack, and you might flop a monster. However, when blinds are higher, you have to consider stack sizes compared to the blinds. Usually pots are too big to not try and steal with a raise (if you're holding a marginal-good hand). Even if you're getting great odds to limp, its still costing you a decent % of your stack to complete the SB. Instead of looking at it as "Only half a blind to call" look at it as "a half blind saved". Especially 3-handed where blinds go around so quickly, Im folding everything less than marginal and raising everything else.
