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Clean the tube surface. All the old glue needs to come off. You can use a wheel flap attachment on a drill. Go easy, you're just taking the surface glue off. Use MEK solvent to thoroughly degrease.
I'm in two minds as to whether you should cut a link between the two holes and fit an inner patch, but given the previous patch had held (probably not repaired properly) before it leaked, then an outer patch should be enough sandwiched the Bombard decal patch and the rubbing strake as before.
Roughen the inside of the PVC patch surface too, making sure the edges are rounded. MEK solvent to degrease. The boat tube is going to be deflated to repair. To avoid gluing the patch to the inside of the opposite side of the tube, see if you can get some Gorilla tape in through the hole to blank it off. Place the new patch on for size and mask the surrounding tube material.
Preparation is everything. Just follow Polymarine's instructions. Decent ambient temperature is important, out of direct sunlight with plenty ventilation.
The patch and tube need two light coats of adhesive. After the second coat, wait 5 minutes, now apply. Use the masking to line it up. It's a contact adhesive, so you get one shot. With a roller spreader, apply pressure across the patch working from the centre out. Remove the masking tape. Any excess glue, wipe off with a little solvent, but go easy, you don't want to soften the adhesive at the patch edge. Place cardboard or a section of plywood over the patch and drop on something heavy to weight it down. Leave for 24 hours, then another 24 hours with the weight removed to let air circulate around it.
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Sula
