I'm thinking more about a lattice constructed from some light, flat steel attached to the bottom of the chassis.
This is what I did more or less.
Used thin gauge sheet aluminum and rivits to make a perimeter re-enforcement, and used 6 or 8 thick gauge spars for the front, larger washers and rivits. I added lateral supports later not shown.
Later I will drill 3 holes in each spar, and rivit +3m VHB tape small angle aluminum L channels to the top side of the spars for extra rigidity.
I can pull myself out from under the car using my setup.
