voids in fiberglass bumper

i have like 3 air pockets in my front bumper.i found them when i was lookin for cracks. anyone know the best way to fix them?

Edited: 3/17/2007 8:51:40 AM by NCI Grand Am

just Knock out the air pockets and Duraglass it. then just get some Zgrip or rage and smooth it out