i have used many different methods welding, bondo, silicone, put the old screws back. welding while being the most permanent has a few draw backs like it burns all the protecting coating off in the immediate area and you can't put a screw back in or drill there. like zil said paint, paint, paint. i found silicone to be the quickest and last for years just clean both sides good make sure some goes though the hole then make like a button on top. highdesertranger