I took a quick view of the course on Google Earth, and noticed that water comes into play on the final 8 holes, each and every time on the right hand side. Look how difficult the PGA Tour players find the course, and some of the aforementioned water will not come into play for them, but would for the average golfer. It is much more common for average to higher handicaps to miss a green or drive short & right, which is absolute death on the back nine at PGA National.
TK