Wienie,
Hailing the other boat in a meeting, overtaking and/or crossing situation sounds like the easiest way to avoid problems.
However, there's a caveat. Under rules of the road, boats are required to monitor ch. 16 however, most boats do not or, they are on a different channel. So, if the other guy doesn't know or follow the regs, sadly, the rules don't exist at this point. And most times at least for me, it's mostly from those with the bigger yachts that don't care how they affect other boats. It seems the higher the helm, the less they turn & look to see what their effect was.
Under the regs, any boat that by their speed, location or piloting causes damage and/or injury, they are liable to pay under the law. If you see someone piloting their boat in such a manner, vessel name, description, & state registered numbers can be used for your argument. Hopefully someone on board can photo or video the boat & incident. Then call the Coast Guard or the water police. If there is a bridge they are heading to, call the bridge tender, tell them the boat caused damage & they will write the boat info for you and, make sure to do this before he hails them.
CR