Of course I would be mad if I caught somebody in my deerstand, or if I caught somebody fishing on my pond. The difference is, if you have a source of running water running through or bordering your property, and that particular body of water is wide and deep enough to hold fish, then an honest person could easily wade through casting a line and not know they are doing anything wrong. And IMO, they should be able to and you use some loophole in a very ambiguous law to defend your actions in removing them. Again, I do think it is BS if people leave trash lying around, damage property, etc. But it seems more like you are just policing this flowage like a dog pissing on a stop sign trying to mark your territory.Would you be upset if you walked up to your deer stand and found me sittin in it? Would you be upset if you walked out in your backyard to take your kid fishin in YOUR pond and found me and my family sittin on your dock fishin? Would you be upset if you walked out to the duck blind you built on YOUR property and found 3 other guys you've never seen huntin out of it?
How would like spending everyother weekend picking up trash that other people left laying around on your property.
I can't believe a sportsman such as yourself would make a comment like, "I don't give a damn what the law says." That's the whole problem.....people like that who don't care about laws. If someone can't take the time or effort to come up to my house and ask permission then they don't have any business on my property.