Are you worried about the gel oat cracking where the rivets held the traction mats on? Looks like the gel oat has already started to crack. I would notch those cracks out into a V and gelcoat them. Also just curious, the holes look very big where the rivets were, did you drill the heads off the rivets and then tap them down just below the gelcoat? How did you take the pads/rivets off?