When my friends and I made these 20 years ago we leaned into the "cannon" vibe and mounted them on sawhorses held down with sandbags, then the ignition was on a

When my friends and I made these 20 years ago we leaned into the "cannon" vibe and mounted them on sawhorses held down with sandbags, then the ignition was on a wire so you could step back to fire it. At the time I think it was... not about safety so much as it just seemed cool to do it like that, but I guess that's one way not to actually be holding the thing while it fires.