The bodyshell is torsionally rigid enough to jack at one end of the sill, and have both ends lift together....I use an 18" long length of 4"x 2" with a section shaped to accept the cup of my axle stand.
By removing the jacking pad, and placing the jack under the timber with the shaped section directly below the jacking point, the car can be lifted then lowered directly onto the stand.
It doesn't damage the paint, misshape the sill, and provides a secure position to support the car.
The other advantage being it saves loads of hassle trying to reinvent the wheel
Brian