Has anyone tried any of the pour in transom materials like SeaCast on a Starcraft. My buddy is trying to talk me into welding or glassing up a transom "pocket" and pouring it full of Seacast. It is supposed to be stronger, lighter, and have longer life than wood. Seems like ALOT of trouble considering that I already have a couple of sheets of 3/4 Marine ply left from another project. Any thoughts?