When they thaw out, the juice will seep out and whats left will be a little bit firmer than apple sauce... I would let them thaw, already inside some straining bags so most of the solids stay in the bag and the juice leaks out; wasnt how i got to do my pear wine but that's how i would have did it if i had time
When they're room temp, you should be able to press/squeeze more juice out of them than what seeped out from being frozen
After you've squeezed most of the juice out, tie the bag snug to the pulp so there isnt a lot of excess for the pulp to expand, and let the bag float on top of the juice - daily punchdowns to keep it from drying out.. Squeeze it out again when the fermentation is done, and pitch the bag