You want enough weight to make the bobber stand up, but don't add so much that it pulls the bobber down. Last, bait up with a nightcrawler, leech or minnow. Tying Your Own Slip Bobber Stop Knot.

Just when anglers thought rattlers have been installed in all manner of lures, the Plastilite Corporation of Omaha comes up with the Rat-L-Bob. The red and black plastic bobber is loaded with steel… ...

Then the lure, bait and shot as necessary is added to the end of the line. The bobber stop can be adjusted to whatever depth at which you want to suspend the lure or bait.