When I played the Boat back in 1999, it played to a par of 69 and an overall length of 5,866 yds. (It's now a par of 70 with a tough par 4 converted to a reachable par 5 on the back nine). But it was no pushover -- essentially carved out of a silver birch forest, the course is quite tight, and puts as much a premium on driving accuracy as any course I've played, because straying off the fairways by not a lot meant death in the jungle of birch trees. It also featured those rumbly, dimpled fairways -- very links-like, in the middle of the Cairngorms -- and greens that are both small and seem to shrug off the less-than-well-struck approach shot. Great variety in its par 4s as well, particularly the driveable 10th at 270 yds, the famous Gully 16th (which Doak noted in the CG), with a huge dip in the middle of the fairway, and a stout closer at 18 that plays uphill at 437 yds.
Sort of out-of-the-way, sort-of not -- it's just minutes off the A9, for those making the south-to-north journey in Scotland.