Pat
I come across some extreme pin positions every now and again, I don't mind difficult ones but when a slight misjudgement of pace by a foot or so means a ball goes off the green, I think this is unfair. Well maybe not unfair but very boring if a putt has to left four feet short rather than hittwo feet past.
I was playing in the Amateur Championship at RCD in 1999, at the other qualifying course, Kilkeel when one of my playing partners hit a putt from short of the hole that horseshoed out and passed him out on the way down the green. It was quite funny at the time, and fortunately for him during a practise round. The pin position was towards the front, seven or eight yards on, of a green sloping from back to front.
We have a couple of greens at my home course where this has happened, eg front right of the 12th green. The slope has steepened over time, the ball does come back to your feet. This pin positioned hasn't been used in a while, but it does exist.
I played a course a few years ago where one of the holes was altered featuring a shallow slightly elevated green with a bunker guarding the front. The hole generally played down wind and in the normal firm conditions most shots from any distance failed to hold the green. The hole was changed less then six months after it opened.