I've knocked mine off on the curbside several times when mowing with my old 8N ford tractor. It's pretty easy to epoxy back on & add an additional screw or 2. It sure is a flimsy way to attach it, 3 screws & some epoxy.
Hinckley, Ohio, 00' winnebago Adventurer 35U,
07' Saturn Vue, SMI Stay-n-Play, Blue Ox Aladdin