A:
The float doesn't have to stand up, but it's easier to see if it does. You probably aren't using a sinker. Slide a 1oz sinker on your line below the float, followed by a bead, then tie on a swivel, and use a 12" leader. Or you can peg the sinker 12" above your hook with a small split shot if you don't want to use a swivel and leader. If the 1oz sinker pulls your float under use smaller sinkers until it floats.