I am not sure of the guage metal we used. My friend owns AMS Metals in Anaheim Calif, and he hooks me up with aircraft aluminum. It is extremely strong and not quite as heavy. And ya we used wood glued together to fill the gap. The previous part on the bow had two L shaped brackets and that was all that held the base for which the trolling motor was mounted on. We also did a nice deck extension and a nice bench seat on that boat.