A few weeks back when it was on the unlimited weekly list (and I was a TM) I finally got to the point of being 2-3 under on each nine, I think my best 18 was 65 or 66 though.
Now, having not played it much, jumped into a RG and promptly shot 2 over on the back nine.
I think it needs to be played quite often to stay in tune with the greens, and where to land the ball.