Going to Knoxville to visit my brother this coming weekend. We're playing at River Islands Golf Club while I'm there. Checking out the rating and slope for each tee, this course looks TOUGH. Any THP'ers ever played this course? If so, thoughts? What makes it so difficult (besides the elevation changes and water)? Is it worth playing? Or is it one of the courses that's so difficult it's not enjoyable to play? TIA!