It will depend on the type and size (diameter in addition to the 4 inch length) of metal lipped swimmer. You may end up having to make your own. Colorado spinner blades will also work for some plugs. The small pikie lip and Lefty 1 lip from NJtackle.com will work on some 4 inch swimmers. I've been playing around with a 4 inch swimmer, sort of shaped like a danny, that uses the pikie lip. V-wakes real nice on top
Jigman