I have refrozen mine before, but what I do is make sure they are well coated in granulated borax, wrapped in paper towels and vac-packed then I have what I call Driveway Bait. I came up with this term after leaving good eggs in the boat in the driveway and a day or two later realizing what I had done run out there and save the eggs.
I have actually done very well on springers with driveway bait.
Peace Superfly