Bring the trailer to whomever made it, from what I could see you will need to sand off the galvanise in a few spots to weld. Then paint it with hammerite. If you don't want to talk to the original company, Benny's friend Joey O Neill is a welder. Noel whelan's company might be an option but Noel doesn't do trailers, so unless business is really slow, won't be interested.
Option two is to get strips of metal and place these over the mesh and bolt to secure. Or use metal cable ties.
