Another Way to handle Opaque Fiberglass
I thought I would share with you the way I handled Opaque Fiberglass. No magnets and no sanding the gel coat...
Picked up on Amazon a laser bullet, about $5-$10. (Used for sighting in guns without having to fire them).
Lined up laser with area to match drill, installed fiberglass housing, marked housing, drilled hole...perfect fit.