Showing my age here- Mustad 3906B (or any 1x long heavy wire sproat bend) in 8 or 10. Smallest brass bead chain you can find (I used a scrap from an old pull string on a shop light), trim close on sides and shape with scissors. I don't add any extra weight as they sink pretty well. I like a somewhat neutral bouyancy. Add weight if you need to get deeper than 5 ft or fish on a sink tip with short leader.