The guys who have been playing a long time will tell you it's the most important thing. It's not. You're right, the stats make it an incredibly low percentage play. The numbers I was given say that in the NHL, a shot that goes in clean from the point and boards accounts for 15% of all goals scored (and most of those are on highly screened shots). 85% of goals originate or are deflected in the small area in the middle of the ice usually called the "house". In beer league, that Dman can hardly even get the shot on net, and there usually isn't a player providing a real screen (they're usually off to the side waving at the puck). As a forward, you're typically better off playing lower in the zone, maybe at the top of the circle, to stop cross ice passes and controlled walk outs from the boards, and just stepping into the shooting lane if that Dman gets the puck. It's interesting to see how many guys scream bloody murder to cover the points if that guy even touches the puck, but don't make a peep if the wing curls off the hash marks, walks to the middle, and scores.