I played both courses at Rossapenna some years back, and waseaten alive by Sandy Hill Links. The Old Tom Course on site was easier, to my recollection.
IMO, unless you are scratch, or nearly so, a course like Sandy Hill requires a very defensive brand of golf--playing for bogeys, laying up strategically with irons, etc. Letting 'er rip with fairway woods and long irons will result in balls sailing into the gunch, never to be found again.
Or maybe I just had a bad day?