[jjacky]

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yes, he is a SLIGHT favorite over a random hand, but that's NO reason to raise. even a super weak and very loose player has an above average hand if he limps UTG (even if he folds only the worst 30% of his hands, he will have a random hand beat most of the time).
that means, even if hero succeeds in isolating the weak player, the average profit would not be very high. but if any other player enters the pot (most of the time with a raise) hero will be a big dog and lose much money.


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You are failing to take into account the times that our hero, because he plays heads up much better than the UTG opponent, will actually get UTG to fold a better hand postflop.

I'm with crunchy. QJo is more than enough to isolate with, provided that there's a reasonable chance we will get it heads up.

-McGee

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the major mistake of the poor player UTG is definitely NOT that he folds too much. don`t overestimate your fold equity against a calling station.

an other important point that i tried to avoid to mention it is the following: hero plays poorly after the flop too. many people overestimate their abilities and think they can loosen up very much because their skill is so much superior to the opposition.

here a quote from inside the poker mind, p 10, essay "playing too many hands, causes and remedies".

cause for plaing too many hands #1:
"players overrate their abilities. some players, after developing a medicum of skill, begin to see themselves as playing somewhere near world class level. consequently, having heard that the best players can get away with playing more hands, they think they can do this too."