Re: cold weather call lure?
Carmens Canine Call, Night Owl Crossbones, Morgans Swampdog. Pure skunk quill. Eye appeal is important as well. It may be very possible they already know the set is there and are just not intrested enough yet. When this happens on my line often another set is made to spark intrest. It is often the one that catches first.
The difference between dreamers and achievers is action.
One try is worth a thousand guesses.