Anyone?

20+2 SnG

I seem to suck at HU and place first at a really low rate compared to 2nd.
I used to play HU really tight (wait for a good hand like pocket pair, KQ, KJ, or AT-AK). After getting to 2nd, I placed first about 25% (note: I'm usually slightly understacked, 3k to his 6k with 1k in blinds on the table.
Then, I switched it up and started being very aggresive (preflop raise with Ax, pocket pairs, KQ-K8, QJ-Q9, and bet postflop regardless of flop if either I have Ace high or there's an Ace on the flop or I have pocket pair). However, I often get caught and lose the game right there. I'm hitting an even lower right now because one bad coinflip and I'm out, whereas I need two good coinflips to win. (And since I'm so aggresive, opponants hand dominates mine more often than vice versa).
I know HU is a lot of luck, but I'm pretty sure that I'm doing something terribly wrong.

Any tips for HU play? (note: I don't consider reads because everyone plays HU differently than they normally play unless you're a very very bad player, in which case, you wouldn't make it to HU on a 20+2 SnG in the first place)