My Leopard doesn't seem too interested. 
I've started to cool my 66% het Leopard female as well. I think I am going to put her in with them and see how things go. Maybe he just doesn't like the hypo. She is a big girl after all, lol.
I modified the temps of the Leopard X Hypo pair to correspond better with Sonorans, hopefully that will do the trick. Sonorans also breed late in the season, so it's still early for them. Should see some action in a month or so.
Here's a nice comparison pic of the size difference:

As you can see she is in shed in the picture. I heard from another breeder that females that go into shed after introduced to a male will often ovulate about 6 weeks after the shed date. I don't know of any truth to this, but if so that would put a prospective ovulation around New Years.
Here's a good pic of her from this summer:

And one of the 66% het female, I think she'll prove out:

-----
http://www.GilbertBoas.com/
http://www.BoaList.com/