I unfortunately didn't get to supervise the repairs (curse my day job getting in the way of working on the boat!) but I believe they cleaned up the crack and glassed over it, then built up under the step with G10 to fill the void.
You could talk to Bob Hennessey at KKMI Pt Richmond (bob@kkmi.com) who is my project manager while I'm there. It was over a year ago but he might remember the details (the boat is Ananda, he should know it).
Last edited by alx; 05/19/15 07:54 PM.