Have rowed lots of both aluminum and glass boats,never a clack tho. Even tho I currently row a glass Hyde, I think the sharp chine on a aluminum boat tracks better for pulling plugs. As far as glass boats go, I prefer the semi rounded chine on a Hyde over the fully rounded chine on the much heavier Lavro. Most of my db fishing is in the winter/spring,so I prefer glass over alum cuz glass is warmer