Seat mods for a more comfortable ride?

I was driving my Swinger last night and was noticing how uncomfortable the factory bench seat really is. It is like setting on a park bench. Not much cushion and the ergonomics is all wrong for me. The original seat cover has some stitching loose so eventually I will need to replace it. At that time I will have it rebuilt with new foam. Other than new seat foam, what has others done to modify the way your seat sets?
How about if you jacked up the front for more rearward tilt or a spacer under the stops for less seat back tilt. Ready, set, Go!