I just started playing 6max too. I always note whether they bet draws and whether they chase. I note all preflop raises and what they show down with. I also note what % of the pot they bet when they raise preflop so I can tell what's a continuation bet and what's a protection bet (ie. They have AcKd and the board is Kc6s7s and they bet full pot rather than their usual 1/2 pot). How do they bet when they have the goods - some guys check or min-bet while others are aggressive. Some guys will bet full pot when checked around. Note that so when you hit a monster you can disguise your hand by letting them bet it for you.

I was doing this at 10max and it helped me make decisions when I had to. Then I figured it would be easier shorthanded. It is easier. However, if you aren't used to making lots of tricky decisions you can get in trouble. I'm still adjusting but I can see that once you hone your skills here, your profits should increase nicely. I mostly made the switch to force myself to play mostly off reads and less off cards. I was lacking in this department - still am but not as much.