I am trying to fill a small but relatively deep dent (about 1" from previous owner transporting furniture with small feet (without racks) on the roof of my 245. Since bondo/most fillers say dont go thicker than 1/4" thick is there a special kind of filler for a thicker application? Like the ones with fiber glass, carbon fiber or metal? Anyone have experience and tips on this? Thanks in advance. showing similar picture of dents as an example (mine is deeper but about same diameter)