That's the best thing to do, just ignore them. Friday I had a couple of guys in a boat come into a cove I was fishing, it's a good sized cove and plenty of room for a few boats - but, they came in, bow up, pushing a huge wake as they went by. It's a cove full of trees, many right below the surface, and they clunked into one, I heard a thump and one of the guys in the boat yells out OHHH!!!. I got a chuckle out of it. Apparently no major damage as they continued to motor into the cove.
Another incident, as I was on plane heading into Viney, a boat comes flying in and cuts right across my front, no danger of collision, but it's just outright discourteous. I guess they thought they were going to beat me to the spot, but they went to a different bank than I went to.
And just think, it is not yet pleasure boat season.