My dad's has been helping me all though my build and he's been a car mechanic for 30 years and a surfer for 20, so he know his way around bondo from car repair and resin from fixing his surf boards. He's taught me how to properly use resin and bondo and he's helped me with making custom fabrication to peped pieces. Plus with foam you lose a lot of the detail especially with helmets and to me most of the foam builds I have seen look like junk. Also my dad and myself are kind of detail nuts
so no go on the foam for us