Not many people have tried this idea, but over here, we use it quite often. Lacross sticks are used to hurl a rubber ball. We like to replace that ball with a water balloon. Range is terrific, but accuracy is not. In one battle, a person used a lacross stick the whole time and was able to hold us off far enough that we could not hit them with our long range. If you're in a war sometime soon, I suggest you try this method of using water balloons.
I've heard of this idea before, never tried it lol, as i cant seem to tie a water balloon, but the last time i tried was months ago.