[therockofgibraltar]

I'm not quite sure did I get your question right but I'll give it a shot.

You just remember the odds!! [img]/images/graemlins/smile.gif[/img]
Just calculate them once, write them down, keep them with you when you play and in a week you you have memorized it!

For example (flop):
2 outer is 22,5-1
4 = 10,75-1
9 = 4,2-1
12 = 3-1
and so on.

When playing limit you can't calculate what is the probability that you will hit if you go to river. That is more NL stuff when all-in.

So when you have flush draw on flop you compare 4,2-1 to the pot.
And then on turn you compare it again. Sure, the chance is a little better, about 4,1-1 but don't worry about that.

If you WANT to know what are your chances hitting your hand by the river, just multiply outs by four when on flop. It is a pretty good approximation!
So flush draw (9 outer) is about 36 % to hit by river.

With these advices you should be able to do the calculations in 10 seconds [img]/images/graemlins/smile.gif[/img] (after you calculate your outs)