I admit to quickly skimming the post - but you speak of Supercats like their construction is radically different and that we're not qualified to comment or work on it. It's fiberglass (or carbon), foam core, bulkheads, stringers, decks, and beams just like all the other cats - the only difference is the shape of the hulls and the internal reinforcements are in slightly different locations.

Again though, it may be a problem common to Supercat 17s so the manufacturer may already have experience with this exact repair so I agree that is a good resource. However, I wouldn't hesitate to roll up my sleeves and fix one just like I would any other catamaran and easily expect the outcome to be just as good.