Personally, I roll .... and roll .... and roll.....
Don't forget the save last stats button allows you to hang on to your best until you get better.
But, now that I know the game better, it's not such a big deal - you know what stats you can lower and fix via magic anyway.
But, when I wanted a high STR, I would immediately pump the STR to 18 and check the % to see how good it was. If the STR % and the total # were good, I'd keep it as my last saved roll.
Then go back to rollin, rollin, rollin.
Hell, I figure if you're gonna play the guy for long you may as well enjoy your stats. 3E takes care of this by allowing characters to pump stats after character creation, but in 2E you're relatively stuck. This was why I used a very generous character gen system with my 2E players - you are simply so much more devoted to a character who is, well ... heroic.