Just a follow up on the fix. I tried the foam, but did not use enough to do much good. I also reexplored my small drill holes and did not see evidence of delamination. Today I decided to go for broke and cut open the hulls to see what was caused such a large soft area. Having seen a Hobie Getaway recently with the built in coolers, I thought it would be worth a shot to install some over the soft spot area. (Keep in mind that this is an older boat that is used primarily for lazy summer days on a local lake). After a visit to Walmart's camping section and $36 worth of stuff I cut open the hull to allow the "revised" cooler shape to fit in.
What I found was surprising. The soft spots were due to large cracks in the fiberglass running parallel with the length of the hull. No amount of resin injected into this area would have helped. It needed some serious surgery or as in my case, modification. The cracks seemed to be confined between the rear cross bar and the centerboard, and on one side there were two parallel cracks about 14" long.
After cutting out a rectangle for the cooler, I framed the cut out with treated lumber and silicone underneath to provide support to the weak area and then screwed & siliconed the modified cooler into the hole. It came out looking good. We will see how it stands the test of time, but I should be able to replace the cooler when needed. Looks like a Hobie Getaway.....with one sail.... I would be glad to include some pictures, but could not figure out how to insert them[/img][url][img] Feel free to email me if you would like more info or pictures.