If you are playing back center or edging, realize that the player you are trying to shoot is running full speed and your paint takes a half second or so to reach him. This means that you are more likely to hit him with a stream placed closer to his intended bunker. Also, people often overslide.their bunkers so shooting the other side of the bunker after they slide in can be especially effective. The pros tend to use the two lane technique- right off the horn fire a few (no more than 5) shots close to their gate to catch any stragglers or players trying to edge. This is called the "primary". Second, the player switches his lane to directly in front of the bunker he thinks the runner is going to. This is the "secondary". It is a good idea to take practice shots before the point to get a feel for the height you need to shot at. Hope this helped!