Pretzel thoughts on how I set mine up, thought about the weight of the riders I usually carry, average is probably 180 lbs each, borrowed 4 bags of 80 lbs Quick Crete form the shop, two in drivers and passenger side, problem arose, I didn't have simulated cooler weight for the back, no problem, went to the LS with cooler, picked up ice and a 30 pack, put in the bed. OK, now for the technical part, start measuring the height with the weight in your rig, take a jack, raise your rig until the shaft or strap is extended with your tires still touching the ground, measure again, release jack, let settle, roll rig back and forth, do the math on the measurements you took. Now adjust your springs, a good spring sag to start with is an 1 1/2 with the weight still in it. This is the first step in setting up a dirt bike shock or forks or I could be full of crap, HA!