DIY Spring Extender - Rev 1 - Half-a-Puck, PICS

What do these do? I've seen the stable loads mounted to the bump stops which are a few inches long and engage the springs sooner. They look to me like an inexpensive alternative to re-archng springs.

Your idea *sounds* like the same idea, but *looks* too thin to make a difference like the other ones do. Do these make a difference? Also, could a hockey puck work? They're strong enough to use for Jeep body lifts.