When to use filler on small fiberglass repair

Fragged

New Member
I've looked around quite a bit and can't get a clear answer on this. I have a Bronco fiberglass top that will be getting raptorliner next weekend. Before that, I need to patch a small area(half-dollar sized) where the gel coat is chipped.

After prepping, can I just put body filler right over the exposed fiberglass, or should I apply a sealer coat of epoxy first? It will get a coat of sealer over the filler regardless, but I'm hoping I could do without it before applying the filler.
 
I’ve applied filler to fiberglass both before and after epoxy with normal results.
 
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