Weight in or under the bed?

[62much]

This may seem like a dumb question, But it's not my first

Has anyone put some kind of a weight, lead, steel, large child, anything, in the bed or under the bed to lower the back down a little? I went to get a 1/2 yard of Bark Dust the other day, and the truck sure rode a lot smoother with a small load, stance looked better! I was thinking about welding, strapping something under the bed to add a little weight without it looking to bad, or I could just drive around with a load of rocks... but that just wouldn't look good, especially at cruise-ins. Anybody done anything like this?