Joe,
It's not a case of "over-watering" but rather, the new system covers a much wider area of rough (no more "runway strips" of hardpan outside the rough) and the super CAN water just the rough and not the fairway, which needs far less water. And the fertigation system can really help produce healthier plants, which is far toughr to hit out of.
Doug,
I have been thinking about that very idea: keeping roughs short before the fairway, and on the outside of the fairways up to 200 from the tee, but I imagine that this might be a bit of an operational headache for the super. Mower blade heights will have to be adjusted, etc. ,and he can't just send the guy out with orders to "just cut the rough."
Some of you may say "he works for you, just tell him to do it" but there is only so much time and money to get things done out there...