Get a 6-8' length of 4' or 5' or 6' high chain link fence, one fence tension bar of the same length as the fence height, two shackles, some heavy iron wire, a length of chain (chain length L = (fence height F) x SQRT(2), like for 5', L = 5 x 1.414 =(approx) 7') and a bunch of concrete blocks. War the blocks to the fence, weave the tension bar thru the 3rd from the end set of fence diamonds, shackle fence diamond (next to side), tension bar, and chain end to each other on each side, and hook center of chain to tow hitch ball with one wrap around ball neck. Yo now have a weighted drag. Drive to town and back about 20 times and the road will be smooth, until it rains again. The folks in town will look at you funny, though.

Just be glad it's NOT an 87 K5 Blazer. I could send you my shocks, too, if you want REAL squushy, as in OEM with 244k miles.

I have also noted that if you drive real fast on bumpy dirt roads, they seem a lot smoother, because you dont hit the bottom of the sharp bumps, but there are some problems with traction....