[aliensyndm]

Scenario 3 - I'd probably bet 4-5$ as a semi-bluff. If everyone folds fine, you win the pot. If you get 1 or 2 callers well it's not disastrous by any means.
Plenty cards to help your hand. It's quite possible any callers will check round to you again on the turn, so you can take a free card off if you miss your flush draw. A check raise is of course the play that would give you the biggest decision.
If you bet say $5 and were check raised to some ridiculously large like $20, you have to fold. A check raise is usually the sign of a monster, like 222 or even 10 10 10. It of course depends who check raised you, 2 pair here is not good enough a hand to slow play, well no hand here is cos of flush draw really. You'd have to work out is it a bad player check raising 2 pair. Is it a good player thinking you've made a position bet and trying to catch you out etc etc. Either way for such a big check raise, I'd fold.
If it was just say bet $5, check raise to $10. Now you could perhaps call and draw for the flush. But if you hit it, you have to bet it heavy.
If a person is playing something like 222, which is the kinda hand you would expect from a check-raise you can't let them make a full house. Especially dangerous would be if you made the flush with a card that paired the board.
Nut flush v Full house is always a sure way for the flush to lose lots of cash.

Scenario 1 - A pot sized bet from first to play should be a very strong hand. You would have to be a little wary of this. Of course alot depends on what you know of him. If he is not a good player it's quite likely he could have called with a hand like KJ and bet his pair of kings. Or he could have called with K10(not a good hand to call with anywhere really(It's also possible he could be on a flush draw himself.
Anyway I'd call the bet and see what the turn brings. Then of course see how the betting goes. See what happens with the betting if the flush hits, see what happens if it doesn't and then make your decision.

Scenario 4 - You have to bin your hand. You have to assume you are up against some very strong hands - and you are drawing. You could also make your hand and lose. PLus it's likely to be very expensive for you to draw anyway.


Scenario 5 - This is a strange bet. Two x pot size. Now you'd have to judge the player here. Is this a late position bet trying to "buy" the pot. Is the person a numpty player ? Does he only have say $20 left and is trying to double himself up ? A bet like that is often the kind of bet a person with few chips left will make with top pair with shite kicker. Those kind of situations can be tough decisions where experience can help alot in making a decision.

Scenario 2 - Early position bets and raises. They should be decent hands. Well you would expect so from decent players, but we haven't mentioned player strength of course. Note JQ is a common calling hand for people and with K102 flopped there's a straight draw, so a raise could also be someone drawing to a straight. Quite a common play when drawing is to raise someone's initial bet, then they will check the turn to you. Hence if you miss your draw you can take off a free card. It's quite common though and good players will see this. In this position if I had reason to believe A wouldn't re-raise I might call. If he does re-raise then you is in a bit of trouble.
If others are drawing you have to be careful you don't walk into their hands.
Say the turn is an ace, that gives you 2 pair, Aces and Tens. But it's also just made anyone with JQ the nut str8.
Sometimes with drawing hands you have to figure is it gonna be worth your while to draw ? Is the person gonna pay me off or are they able to lay down their hand ? A numpty will call with his nut straight even if a flush hits.
But a decent player shouldn't pay you off. If indeed an ace did hit it wouldn't be a total disaster, as well as a nut flush draw you have two 10s and two aces to help you. You could well be winning anyway, but you have to be very wary you don't pay off someone's hand.


Ok in above example say you call and A calls, the turn is an ace.
It's checked round to you. Now you could perhaps argue a case for betting this so people will check the river but, there's a good chance if someone is playing JQ they will check raise you. So I'd check the turn.
If you hit your flush and there's no board pair, sweet you have the nuts, try and get as much as you can from them. If you hit your flush and the board pairs you have to be slightly warier as you can be beaten.
If the river falls a blank and one of them comes out betting, you gotta be prepared to bin your hand, they obviously don't want the hand checked down, hence are betting it. If it gets checked round to you, well you check.
If you are beaten by JQ you'll be check-raised. If someone else on a flush draw missed they wont call you anyway. If someone was playing a set like 222, they may check raise you as well. You're basically only going to be raised if beaten here. It's doubtful anyone would just call and lose. It's possible of course, a bad player might have KQ, think it was still worth a shout and call. But it's not worth the risk of being check raised.
Any money you make from such calls is offset by the money you lose from check raises.

I've seen some stupid shit happen before like......the river is dealt and people check round to the last guy, he bets $1. Someone then re-raises him all in, he calls and loses. I mean wtf ? $1 ???

Anyway that's my initial thoughts on the hands but it's by no means difinitive or "correct".