Cotton tail sound that doesn't come as default,
jack rabbit that doesn't come as default,
Coyote fighting sounds,
Pup distress,
and a 60 second group howl of some kind.
Early in the season, I find that most sounds work.
Come January, I find that when i play standard sounds that come on the calls, won't work very well.
Some days, they come on a sting to certain sounds, and other days a totally different sound.
When your out and you play something that brings them at a run, I start every stand with that sound the rest of the day.