Well. I guess if you play good and take your shots, sooner or later you will win in freeroll, just need to stick with your game and use your best
odds. In freeroll is many monkeys ,who don't care they chips, so I better don't risk with my chips even with AK in the very start of the freeroll because even if i'm favorite, i dont need to risk with all my stack in some kind of flip.
When blinds are bigger and u have like 10-30BB it's already better to try your luck with AK flips, but still don't need to play like monkey and when get those cards ,without thinnking go all in.
Just as I see freeroll is - 1st hour don't rush, let the biggest fishes get caught - 2.hour start playing your game ( I pretend to be agressor in table, but it's useless when no one cares his stack.