I would say that you are right! There is a right way and a wrong way to dift on by someone in another drift boat. Do not drift over the hole that the other boat is fishing in. That right there is a no no, but in this case you don't have a choice when they are anchored at the top of the hole. The river is only so big in some spots. If he thinks that is bad, he needs to take a trip to the cowlitz.