I have a few questions for you to ponder before you remove your shocks,
1st, Can you see brand and part numbers on the shocks you have? If so try to cross reference them online or in a parts store, maybe they are shocks designed for a 1/2-1 ton truck that some one was able to get under there is so that would be a much stiffer ride then normal.
2nd, Do your leaf springs sag down on each end instead of lifting up? If they do that would not help the ride either.
3rd, Are the bushing/shackle bolts so tight that they do not allow the leaf spring to move back and forth the way they are intended to? That would also affect/effect (one of those two words LOL) your flex and your ride too.