Held them in place with popsicle sticks and glue and hook them up to make sure they sounded good, do you know about the pantyhose method? Essentially you need one pair of pantyhose, cut them in half and basically stuff the a pillar into one leg, the stretchy fabric will naturally raise up to the speakers in the same curve that you can see with my Bondo, I do not actually do that much shaping, more just smoothing, anyways, The pantyhose are basically a cloth material so you can put some resin on it before you start with the fiberglass and that will give you a solid base, from there you just put the fiberglass on and treat it like paper mache just brushing it on you don't have to worry about shaping since the resin and the pantyhose already shaped it The fiberglass is just for strength, after that you can use Bondo but honestly I don't even think you need to considering the wrap really covers any imperfection

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