In response to Lost Equipment.
Unfortunately people like that come with the territory. Just like people that scan the horizon for other people catching fish, so they can tie up to your boat. A boater is reponsible for his/her wake, if said wake causes damage. But, by the time you pick your wet butt up out of the water he’s long gone. As you said, he was moving too fast to get his numbers. In reality there’s not much you can do. Good luck.