Here are some photos of Carl's setup:I seem to remember Carl Hungness coming up with a neat solution to going fully sprung without the need for an additional frame or supports off the rear footrest plates, I think he used the the footrest hanger through bolt and a modified battery carrier to support the seat using flat supports coming up between the rear spring boxes, it looked very neat but not sure how strong it would be for a rider and pillion passenger of reasonable proportions, anyone know if the mod was widely used?