Haha, yes, I've done something similarbefore as well if I absolutely needed to, although with the larger Feisol, I find I don't have to do that nearly as much since that thing is so stable. I think one of the things I did was fill bags with small rocks and place them by the legs.
I've also seen bags hung off of a hook on the bottom of the center post but I don't like that. It it mobile and can swing, not good.
I found a Gorilla Pod at Goodwill, every photographer should have one. Small, light and it will do things that no standard tripod can do.
I've found mine very handy for positioning my Tascam DR-40 at live events, you can put it well out of everybody's way.