Ice Yacht Association
At Green Lake as we were bagging Burly's plank we saw some cracks around the bolt holes. Further examination showed cracks deep into the top board where the hull outer edge contacts the plank. The repair job was just the same as needed by Bob Mereness a couple of years ago.
The top board gets cut off with a router. Then the center is filled with spruce to make it solid. Then the top board gets cut from the center out at a slope that creates a long scarf joint on each side. The new board was made from Spruce from McCormick - edge glued, planed to thickness, and tapered on each end with the jig and router to match the joints on the plank.
A couple hours of hand shaping and sanding and the plank is good for a few more decades.
The pictures below show the process:
Removing the bad and filling the void:
The new board - Lots of West System and a few clamps.
Shaping and finished product: