Back in the days when there were less maps we played every map back to back
Ooh a little higher, now a bit to the left, a little more, a little more, just a bit more. Oooh yes, that's the spot!
the weaker player will more likely get a card which matches what he has in his hand and so be more likely to have a Gang of Four. So there is a Poor Get Richer effect as well.
When passing, I would only pass a low single if it particularly benefited my hand to do so. No giving freebies to the LoserGuy