MeatEater's Great American Bull Boat Race

Steven Rinella and Ryan Callaghan test their woodsmanship and bushcraft skills to construct their own Bull Boats using only raw bison hide and willow branches. Steve and Cal then race their organically constructed vessels a few miles down a mighty Montana river during runoff. The first to successfully navigate the river in their boat and hoist the MeatEater flag will have bragging rights for ages to come. Which of these two modern-day mountain men will construct a better Bull Boat?