I see, I got a boat chip fix kit from Amazon earlier but it mixed very thick despite following instructions, like very heavy putty, solidifying very rapidly too and was impossible to apply in a fine manner, and impossible to clean up/wipe off where it went on wrong. Is fiberglass supposed to be that thick during application or should it be kind of flowy?I'd guess Bondo would work fine to fill chips. You can buy gelcoat as well. I've never tried to do fine finish work.
I actually will sell my camper soon so need to fix things up for that.What you were using was probably polyester resin (with MEK added to set off the reaction) with something in it to make it thick. This is what Bondo is as well. If you use too much MEK/hardener, it will set up very quickly. The amount of hardener required varies with temperature.
I'd just fill the chips, paint them or put a vinyl sticker over them, and call it good. Best to not get too attached to cosmetics on something you actually use offroad. I worry about breaking things, not scratching them. My rig is covered with scratches.