Glass is easier to fix but will rot if left out in the elements. Glass had some give which made for a little smoother ride, aluminum i felt every ripple. I eventually got rid of the glass boat and chose aluminum with poly for the durability and longevity. I got tired of fiberglass cracking and having to rebuild tore up spots. More money for aluminum but cant buy peace of mind so to me it's worth the price. To each there own, JMO.