Thanks for the suggestions, I do have a small-ish green screen I could take on location so I’ll try that. Great idea using the harness although I think for this project I’ll have to rely on motion keyframes and some imagination fom the talent.
After looking the (above example) site again, he has a “compositing reel” that has the car hit sequence split into elements. The colorization of the final helps sell the effect, but I’d have a hard time rotoscoping against such a dark background. Any guesses how he isolated the talent in that sequence, my guess is an animated soft edge mask – but what do I know?
Thanks!