If you call a raise with
[2s] and the flop comes
[Jd][2s] and there are 4 people seeing the flop and the other 2 are between you and the raiser, then you should most certainly be leading out, but you shouldnt be leading 1/3 pot. That would be a donk bet (although it still might work in this spot).
If I raise to $10 and we are heads up to a flop of
[8d][3c] and you "donk bet" $7 into the $23 pot, Im going to raise you most of the time. When I raise to $30, what do you do with your KT? You would be better off either check / calling or leading $18 or more. Its going to be tough for me to raise that bet without having KT beat.
So leading $20 is fine. Leading $7 is a donk bet.
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