I agree with Frank. The noise from Farrington has progressively gotten worse since I arrived in 2007.
Each community that borders Farrington should use its association funds, in addition to general funds that Im sure Koolina has squirreled away to pay for the sound wall.
If you watched the Lotte Open last year, it was pretty embarrassing to see pro golfers trying to play golf with all the vehicular noise from Farrington. If not rectified or addressed in some manor, then Koolina might see events like this move to other, more professional digs.
Short term investment---> long term pay off.