Sounds like you and your son were having a quality time out on the water, until the butt hole on the water rat showed up.
Yep call them and if you can get the numbers, that is a BIGGY. Give them as much information as you can about the person(s), so that when they talk to them they can make them soil their panties. The info you can provide the more of a case they can build.
Trust me if more people start calling on some of these butt holes we will have a better place and more enjoyable time on the water or any where.
Litter Bugs!
People that throw "FISHING LINE" in, bottles, beer cans, or wraping paper, six pack plastic bottle holders.