I fix a lot of caravan front and rear panels with hot staples , Discovered them after finding the front bumper on my car had been repaired using them. Just wish the mechanic had cut the ends off( ouch) . With my kit the side cutters provided aren't the best so a dremel with a small disc grinder on it works wonders. I would suggest you practice on a scrap piece of plastic first as it's easy to overheat the plastic , I also give the 'gun' a slight twist as the staple cools . After smoothing the plastic I use two part shower and bath repair kit to fill in the 'depressions' before flatting and a final paint coat . Enjoy