Shot all depends on how heavy a float you are using.. If the water is moving quickly, you'll want a bigger float with more shot to get your rig down sooner. If you are fishing frog water (slow moving water), you can get away with a lighter float and less shot...
The key is to put on as much shot as possible without sinking the float. You want the float to go down with as little pressure as possible.
You'll wanna run a 19-24inch lead from your bait to a micro swivel, then attach that to your mainline.
Beats has the right idea though, float guys are a pretty nice bunch, I'm sure if you ask a few questions someone will help you with your setup.
Bookmark this link.. It shows a few shot patterns that will come in handy...
http://www.fishonlineca.com/index.php?opti...9&Itemid=54