Jonathan
in-line or regular? For in-lines I use .031 but many use the .028.
Quite a few guys ask for the R-bend or Looped spinnerbait wire in .051, but I don't like it above .045, the .051 is just too stiff and big for my tastes.
Look at muskie spinners for ideas, good weight for your neck of the woods, but if your fishing the shallows you'll want a lighter head, usually no more than 1/2oz at the most.
let me know if you've been to Fred's yet