Just to be clear, bringing a bow and arrow to a water balloon fight is definitely cheating.
Attempting World Record For Most Water Balloons Burst With A Single Arrow

Because everyone spends their spare time differently, this is a video following Youtuber DrewBuildsStuff’s quest to set a new record for most consecutive water balloons burst with a single arrow, following the guidelines established by Guinness World Records. The previous record? 38. Can he do it?! You’ll just have to watch and find out! Then tell me so I can update this article with an answer.