The summary of the discussion on fouling is as follows:

Fouling is part of the game, some people like it, others don't. What many, but not all, people agree on is that fouling in the last turn of the game -- that is, turn 8, second half -- is bad form unless necessary to score to win or tie.

While it is not against the rules, most people will refrain from fouling in this turn in the interest of their reputation, which would no doubt be damaged by reports of your turn 8 fouling.

In addition, pushing an opponent over the sideline in turn 8 second half is generally considered lousy manners too.