Don,
I've only made one guitar with the Linda Manzer wedge and did it with my normal domed/radiused back and with a back to front side taper as per normal. The method I used went broadly as follows:
I built in a side to side taper of 15mm from treble to bass side at the waist. This meant that the centre line of the back of the guitar (front to back) would be 7.5mm lower than the treble waist edge and 7.5mm higher than the bass waist edge. I bent the sides (with no taper - ie the same width for the whole length) and joined them to the neck and tailblocks and put the rim set in the mould. I put a pencil mark on the treble side at the waist that gave the side height as the tailblock centre height plus 7.5mm and a corresponding pencil mark at the bass side wiast 15mm lower. I then tilted the rimset in the mould until the two pencil lines were at the top of the mould, clamped it in place and drew a pencil line on the sides around the top of the mould. I then shaped the rimset sides and blocks to give the back side to side taper. I could then draw on the usual side profile that allowed for the backs curvature and desired slope/taper from back to front of the guitar and shape the sides accordingly.
Hope this makes some sense. I'm sure there are lots of other ways to do this.
I really like the playing comfort you get with the Manzer wedge:
