My round at Spyglass was from the up tees, the guy in the pro shop warned me they had the whites set at nearly 6,400 yards that day but frankly it played much closer to its card value of 6,123. Anyway, from my point of view it wasn't clear just where the difficulty of the course primarily lies.
My poor score was due to a whole bunch of chunked and bladed wedge shots. Frankly, I would have scored 95-100 that day on a wide-open 6,000-yard muni course. Tee to green I found that Spyglass rewarded my usual conservative bogey-golfer's game and there were really less than a dozen shots that absolutely required hitting a decent shot or it would surely cost a full stroke (tee shots on 3, 5 and 12; second shots on 2, 4 and 17; third shots on 11 and 14) but I could play the game of keeping the ball between me and the hole and leave a lot of fairly easy up-and-downs without hitting many greens.
So from the back tees does the trouble come from driving it sideways? Or do the green complexes punish bad execution of iron shots toward the flag more than my weak-ass rollers up to the front fringe? I suspect that Spyglass Hill more than some courses leads to compounded errors and big numbers. For instance when Lou hit it right on the approch to #11 he had to drop in a crappy lie then try and get it on a firm, elevated green carrying huge bunkers. If you don't have your A-game even a good golfer can post worse than a double on a lot of holes at Spyglass from the back tees just by not having an easy route back into position once you've hit it in trouble (3, 5, 10, 11, 12, 14, 16 at least).
So what is the hardest element of Spyglass Hill to decent players.