What would you do?

If....riding on a smaller part of the lake and crossed paths with another boat several times. Their rider falls as I am about to hit a d-up and head back in the other direction. They decide to go that way and cut us off. I mean like within 100 feet. So my driver stays behind them. They proceed to try to start a fight and ask why we were following to close. And the best part...all he could do was challenge me to a "ride off." hahahaha.