Can I keep up a 210% ROI

[Blarg]

The key to keeping your ROI over 200% is making sure your ITM is always over 100%. Most good players are ITM at least 140% of their games, and some of the top SNG pros who post here win over twice as many games as they actually play. We're talking about people in the top level, hardest games, though, where win rates are much lower. If they stepped down a bit to easier games, their win rate would go up.

Lots of people who could play higher are happy just to have less variation and win 20 or 30 games at a time while 8-tabling the 55's.