In the picture above, you can see that the spout for the bucket is at the top in this configuration. The idea is that the level in the bucket will be low enough that you can open the bucket when it is on it's side. then you gently roll the bucket and as you roll the bucket, the spout turns, lowering it below the level of the liquid therefore letting the liquid out in a controlled fashion. The cradle is just a simple contraption to hold the bucket so i don't have to. It is also inclined slightly, so the idea is to hold your mix cup with the left hand, and roll the bucket with the right. Once the mix cup is full, simply let the bucket roll back to the "off" position (spout at it's highest possible position.) As the bucket gets lower and lower, you can "reset" the beginning spout position. In my particular situation, with a brand new bucket, and a very uneven floor, I have shimmed the front of the cradle up to elevate the spout.
Make sense?
The hardest part was getting the bucket on top of the chest tall dresser. I have done several dry runs, and cannot pour for a couple of days still. My daughter is recooping from MAJOR surgery, and i have a 5 month old in the house for a few days with strict rules about chemical use while she is here. As soon as i get the go ahead i will take it for the first test drive and let everyone know how it goes. I suspect it will be excellent!