Lake Nippising is the only place I have caught them. Typically it's when we're fishing for walleye in the spring/ early summer. I can't remember a time when we've got them on a minnow, it's either worm/jig, worm/crawler harness or jig/grub. That might also say something about which presentations we use in the areas that the drum are in at that time of year on Nippissing. One year it was the guy using a blue crawler harness that was the only one catching 'em, another year it was orange. Most other years though, colour didn't seem to make as much of a difference. For what that's worth? That's for someone else to decide.
Lots of fun on the walleye gear.