David,
Your reaction to Durness is much like mine. Glad to have done it, glad I got a blindingly white golf shirt with the puffin logo on it, but I'm not likely to seek out again.
I played with a former member, John Avison, and my introduction to the course was when the brake on his cart failed on the first fairway and John had to chase it several yards as it was making its merry way back towards the golf shop.
Later on in the round I holed out a seventy five yard wedge because it hit the flagstick on one hop and dropped straight down into the hole. I believe that was on the par five 6th. John was not best pleased.
We try to make the drive to Durness at least once each time we are over because it is spectacular and the beach is Durness is popular with holiday makers.
Also, I believe John Lennon's aunt who had a great deal to do with raising him is buried in the cemetery you pass just before reaching the golf course.
Durness could be described like my home state of West Virginia, "Wild and Wonderful."
I glad you guys have widened your golfing circle even if you don't return to them, all of these courses are worth the trip.