Bondo-Glass Short Strand Fiberglass Filler

[will]

So, any of you guys used this stuff? I've got to start filling some cracks and holes, and saw this in Auto Zone the other day. I've never worked with fiberglass where the finish needed to be good (repaired fiberglass pipe). I can't access the back side in some places due to some sort of foam under the glass body.

[KIM-P]

Dont know much about this stuff on fiberglass but works well on steel. I do know from experance that using fiberglass to repair fiberglass is your best option because glass flexxes a lot and bondo doesnt flex as well as glass.