For that to work, you should really order lunch and have everyone pay for their share. Since you are trying to be where the paintballs are not, that probably counts as navigation.
You're actually looking to run between paint moving at less than 300 fps, right? Whatever it's traveling at by the time it gets to the end of a speedball field?
However, as you go further out, you should account for horizontal spread of the paint. If a hot cup of tea is good for an instantaneous jump 2 feet to the left, mediocre quality paint contains enough improbability to counteract your efforts at a simple calculation.