Number of bases awarded?

[briancurtin]

taken from MLB.com:
Minnesota Twins - Metrodome

* Foul poles are in fair territory. Ball hitting roof or speakers in fair territory: if caught by fielder, batter is out and fielders advance at their own risk.
* Ball hitting roof or speakers in fair territory shall be judged fair or foul in relation to where it hits the ground or is touched by a fielder.
* Any ball that hits the speaker or roof in foul territory is a foul ball; if, however, the ball is caught by fielder, the batter is out and base runners advance at their own risk.
* A ball that hits speaker in foul territory and ricochets back into fair territory is still a foul ball; if the ball is caught by fielder, the batter is out and base runners advance at their own risk.

as for your second question: i havent worked one of those fields in forever, but the last time i did one, it was considered a foul ball. i dont have a ruling, besides my ruling that those fences are the stupidest ever and im glad i havent worked with one in a while.