Our (Angel's) first DNF (Black flag for knocked off front nose) came in 2006 at New Castle. Lost both clamps that hold it on ($32.00 a pair).
Simple cheap fix that has not failed since.
4 plastic zip ties and 2 hose clamps.
Put a zip tie around clamp to chassis metal bumper (Keep from loosing clamp), and another one around clamp down lever (to keep it from un-clamping).
Put 2 hose clamps around top & bottom of metal bumper loops.
