High grass protecting one side of a green and really close...
Imagine a fairly open green, but on the right side:
a 3 feet wide fringe and then long grass (7 to 10 inches)...
doesn't look too scary but put a pin 17 feet from it, only the gutsy will play to it, most will bail left, and great recoveries could be done from it
Phillipe,
I once had a tour pro suggest that on the first green of a course we were co-designing. I started doing some math, and given that the safe zone (mowed turf) increases by the square of the radius, the number of balls kept in play really rises for every yard out you put the grass.
A 50 foot radius green amounts to 7500 SF. Add just 3 foot of safe turf around it and that rises to 8427 SF. Add another 10 feet and it rises to 11,907, or a quarter acre, which is a lot easier to hit.
A practical problem is the irrigation - irrigating native grasses with greenside sprinklers usually leads to vegetation far too thick and the difficulty can become near imossible.
Details on an idea like that make the difference, even if used on a course where overall difficulty for the average player isn't a huge concern.