When it comes to docks it really depends on your local laws. When it comes to other boats fishing I usually use the FLW 50 yard rule, which is pretty much casting distance. If I want to fish closer ask, the water belongs to everyone, but we should all play nicely. Docks are pretty much public property here, but I'd someone is on their dock I'll pitch it to their dock as wait for them to look and give them a friendly wave, If they're around their dock in their boat I treat the boat ,as long as it's manned, as if it were on open water. Unfortunately people will put on gopros and go around deliberately pushing the boundaries until someone says something to them and they edit the video in a way to make them look completely innocent for an easy 1m views on YouTube. Be friendly because there's not much you can do to stop rude people. If you're not fishing don't let it bother you. Until there's a firm red line we have to try to respect other s and just ignore the douches. Yes it's public water and you can be anywhere you want to be, but that doesn't give you the right to be a *********. If someone is right on your butt on the highway you're going get upset, the roads are public and so is the water, just because one is wet doesn't give you the right to be a Doo Doo head