I'm still learning, and I've only ever really played in
freerolls, which I know doesn't help a lot with the learning.
I usually play very tight unless I have a killer hand just because the sheer volume of people going all-in and hoping to get lucky is eventually going to overcome my playing smart.
So generally, I play extremely cautious until the idiots have filtered themselves out. I'm never the chip leader mid-way in, but I often have found myself in the top 3-4% of the field when the bottom 1/3rd are out.
I need to adjust what I do after that because I rarely finish there. Finished 13th out of 6500+ last night which is probably the best I have ever done. I finish in the top 30-35% a lot, but out of the top 15% more often than I'd like.