There a million names for rig and as many ways to tie it but this is the one I have success with here in Nor Cal. The way you fish this rig is to cast upstream and let the rig sink. Gently lift up until you "find the weight." Then begin lowering the rig down into the water until you find the bottom or are fishing at your desired depth. Generally, you will want to lead or slightly drag the weight downstream. This will provide max feeling when you get a grab. To tie this rig you will need -