Doug,
Do you know if they are using fathead heads on the macho minnow or are they not using bait?

Sorry I didn't see your post earlier...but yes we are using fathead and crappie minnow heads.  The size of the minnow matters alot.  If you grab a large fat head they don't seem to want that...same goes for a really small crappie minnow head....it's the medium heads they seem to prefer.  Good Luck!