It is not the flat bottom of the Db that is the issue it the rocker. The rocker puts the chines at an angle which is what allows the DB to track. Under power they fight each other and create instability. Lots of flat bottom boats go very fast safely. They have straight chines or rounded chines at an angle. Chine walking becaome an issue at high speeds for true flat bottom boats.
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Liberalism is a mental illness!