Even if you do a good job of hiding your cheats and getting past gameplay detection, if you win too often, you'll be suspect.
Ban Decision Factor: High
Unless you're Hikaru Nakamura playing on your alt account, you're probably going to get banned, or at least draw attention from mods.
You win some, you lose some
Make sure your win/loss ratio isn't too high. Don't win too many games in a row. Even Hikaru only wins 80% of his games
If you climb too high, too fast, you'll be sniped quickly.
Your Elo history should resemble Bitcoin's price chart.