THIS. I ran a 3 gallon jug of water in the Ural trunk until accustomed to the rig. The greatest benefit therof is that you can just pour it out when you don't want the ballast. I run no ballast now. Weighted chairs are more stable or balanced only up to a certain point. Anything more, and you risk imbalance favoring the s/c. It is uncomfortable to fly the chair in right-handers, but more-so to ground the s/c and flip the rig. That said: Some lighter cars probably need to be weighted, but I'd prefer to carry tools, spares, extra fuel, or luggage over lead ingots any day.
