Here you can see I have epoxied the joints together between the wires and am starting to snip the ends off the wires prior to removing them. Next step will be to put a fillet off thickened epoxy along each seam. I used epoxy mixed with brown microballoons as the colour match was reasonable and it is easy to sand. Aim to fill the seam proud in one go. I used a cleaned out old bathroom sealant 'big syringe" to apply mine. Then round the corners and generally sand the outside smooth.

This stage is very satisfying - just cleaning up the corners like his suddenly makes it look like a kayak.