I have repaired the rear ones by putting a port towards the back of the hull. You then have to get the floatation block out of the way by cutting it into the plastic bag and then taking the pieces out of the plastic bag that encloses the styrofoam block. I cut the foam with a wire saw from a camping store. (You do have to put the pieces back in to be class legal) I then ground out the fiberglass cloth that holds the wing tube in place and replaced it with West Epoxy. Also, on my boat there was water in the pods that holds the wing tube. So I had to drill a small hole in the bottom of the boat to drain the water out and refill it.To be able to see what was going on I rented an underwater fish video camera and did the grinding with a dremel tool with a flex shaft. It turned out to be strong and water tight. If the surgeons can do things orthoscopically then so can we!