Good topic. Two examples show how I think of the issue:
I have come to the conclusion that my course, Windsong Farm, is essentially a penal course. It takes a number of rounds to realize that it is penal in nature because it has many of the features one associates with a strategic course - wide fairways, firm conditions when conditions allow, short grass around the greens with all sorts of terrific chip shots and interesting greens with preferred angles of attack and deep bunkers that are a real hazard.
Nonetheless, the primary question it asks off the tee is whether or not you can hit the ball a long way within the confines of wide fairways. The fairway bunkers are usually on the opposite side from the best angle into the green. There is no temptation to hit the ball near them other than in some cases saving a few yards. By my count there is some sort of hazard on the preferred side of the fairway on 5 of the 14 par 4's and 5's.
Course tour:
http://course.bluegolf.com/bluegolf/course/course/windsongfarmgc/aerial.htmStrategic fairway hazards on 3 (bunkers on rt); 6 (bunker on left); 11 (bunkers on left); 12 (wetland on left off tee, bunkers at layup spots for 2nd); 18 (creek/pond on rt)
I consider the course at my former club to be much more strategic. There I count 10 of the 14 par 4's and 5's as having some sort of hazard guarding the preferred side of the fairway. That course has more narrow tree lined fairways so the strategic nature of the challenge would also not be readily apparent the first time you play the course. Some of the other holes are very penal but the challenge of hitting a drive down a narrow fairway with trees close by is a nice change of pace there.
Course Tour: http://course.bluegolf.com/bluegolf/course/course/oakridgecc1/aerial.htm
Strategic hazards on 2(trees at corner and slope); 4 (bunker on rt); 5 (bunker on rt) 8(bunker on rt); 10(pond); 12 (trees on left and slopes); 13 (angled ridge/trees); 14 (bunker on left off tee, slopes for 2nd); 15 (bunker/slope rt); 18 (bunker, slopes, blind shot on left)
There can be bad holes that are strategic and good ones that are penal. I think of most holes going around a pond as strategic, particularly if they favor a tee ball placed near the water. Nonetheless, I am not a huge fan of a steady diet of such holes. By contrast, I have no idea what might be considered strategic about the Klondyke hole at Lahinch, but I would love to play it again.