[BACKYARD88]

With a low rate coil and bag you would more or less be relying on the bag anyhow. If it was empty your height would drop because the spring wouldn't hold the weight without it. If your springs were strong enough to hold the weight they wouldn't drop any to load/unload your toys. If you put a bag in place of the spring with a small bolt in notch or something of the sort the ride will be nice, adjustable, and in the event of failure the axle would just bottom out in the notch leaving the truck still drivable.