There is another kind of approach which is used with great effect on greens like St. Andrews in Scotland, and that is the running-up shot played either with the cleek or the wooden putter. This method of approaching the hole is never of much service on inland courses, where the grass is not of a fine enough nature to allow the ball to travel smoothly over it for any distance. But on seaside courses it is an invaluable part of the golfer's equipment, for it enables him very often to keep his ball near the hole when the keenness of the greens would make a lofted shot very dangerous; it is also particularly useful on windy days when it is risky to let your ball rise into the air. Here, again, the stroke is very simple, although hard to acquire. Nothing but practice will give you the faculty of judging the strength, and that is the all-important part. For the rest, it is merely necessary to hit the ball clean, allowing, of course, for any slope in the ground, but remembering that a ball which is struck true with a wooden putter will keep its line marvelously well over any little roughness or undulation. That is why it is often advisable to use the wooden putter, or the Musselburgh iron, as it used to be called rather contemptuously, at any distance up to forty yards or so from the hole, where there are a number of small hillocks intervening which are sure to turn a lofted shot off the line, but hardly affect a truly hit put. The wooden putter is more effective for this stroke than a cleek, because it is less likely to put any spin on the ball. But a cleek may be used in the same way where the lie does not warrant the use of the wooden club.