I removed the rocker covers and cut 2 pieces of wood to fit the jack stand end and car body then supported it under the original jack point. Flush against the metal lip in the background. Check integrity of rockers before doing so. The brown stuff is excess waxoil.

Very cool. I have yet to pull my rear subframe, but may do so this winter.
Where did you support the rear of the body? A picture would be helpful.