Tar-like undercoating on 63 Valiant...any way to remove it?

You are kidding, right? You can never get there with that. Right???

Hard to hold the phone and run the scaler at the same time, it is heavy and a two handed tool. Once you get in the groove you can knock the undercoating off in big chunks. I had this Valiant totally stripped of undercoating in a few hours.