With Queen Bee of course, no, not needed. But with the 50-lb K-man, or empty, I like running with ballast. I'm using barbell weights in a canvas bag with a closed cell pad on the bottom. Still, this ballast goes airborne when the car wheel hits a big rock or hole and I'm concerned about damage to the car or the hidden wiring I've got. This weekend, especially, I could hear those plates clanging against each other as I was descending this one nasty section of road up around Green Lake in the Ahtanum State Forest. 50 pounds of lead shot would probably be soft enough to not damage anything when it's getting slammed around under the seat, so I think that would be a good choice, but that's gonna cost me about $100. Sand is cheaper but 50-lbs worth takes up too much space--and sand always seems to escape whatever kind of bag you use. I don't really want to start drilling and bolting steel plates to the car floor because that will weaken the car, plus it will be a pain in the ass to install and remove over and over. So, the question is, should I buy $100 worth of lead shot, or is there a better solution? And just to save you anti-ballasts the effort of posting a reply, yes I already know that a properly skilled sidecarist doesn't need ballast and I'm a sorry excuse for a hackista and I should start working on learning how to drive rather than posting up silly questions about ballast. There, you see, all of the anti-ballast people are spared the effort of replying. Thank you very much for the advice, though. Now, for the pro-ballast folks, any ideas?