I have a 1980 spirit 28, due to leaking mast shrouds I have sot areas of decking. The deck appears to be outer layer of ployer with a layer of wood, 1/4" or less between outer and inner layers. I have repaired leaks to shrouds with a thickened expoxy, any body tried to replace rotted wood for a high density foam, or possiby seacast, or should I use expoxy with fillers and exopy
