This is easy- try to run into a ball. Paintballs are really small. This will be hard to do. Ergo, you will miss the ball if you are really trying.
Alternately, you could work on running and shooting, so that you can tuck that opponent player into his bunker so that he can't shoot his lane. Snap until you control him, then run and gun or just get there.
For breakouts, figure out the path that if run, will expose you for the least time. Or, run out at first so that you are more likely to get a bounce.