I don't have a picture but I remeber the post - it had a series of pictures to illustrate the job. It may have been from a poster who has been banned from the sight.
I had the same work done to a Seafarer. The Plywood became delaminated and gave the panel a flexing feel. The fiberglass shop that did mine cut out the plywood installed new and reglassed. If came out as good as new. I was amazed at how light the repaired panel was. The old one had become saturated with water and was very heavy.