On a long travel suspension the axle actually moves fore and aft a lot. So by playing with the angle that the shocks are leaned forward at and at what degree they are leaned in at you can adjust how effectively they dampen. When using an arched spring in the rear (Ill use mine as an example) the rear axle moves about 3" or so back from its normal location at ride height when its compressing the bumpstop. When its at full droop it probobly moves forward 5". So that means that in full stroke the axle makes 8" of movement fore and aft. If the shock is leaned forward at a 20 degree angle it will have more dampening at full droop then it does at full stuff.
