If you are a photographer who shoots on site a lot with studio lights, you are probably well aware of how much your gear weighs. You are also well aware when working with lights in an outdoor location of how easily they like to topple over. One swift wind and there goes your $1000 light.
Now for me, I'll be damned if im going to pay an exorbitant fee for a glorified light stand weight. Especially one that is simply a bag of sand. Never mind carrying said bag of sand to jobs.
The easiest solution: a 4 litre jug of water (or 1 gallon for our American friends). Fill the jugs you need with water before the gig. Empty them when you are finished. Easy and cheap. Plus if your thirsty after a long photo shoot they also come in handy.