Open positions are not shown to non-subscribers. We allow system developers to DELAY the display of closed trades by up to 7 days. However, to participate on C2, you do have to make the trading record available, albeit on a delayed basis. We require historical results to be displayed (and historical trade-by-trade details).
To delay your trades, go to MANAGE menu then select EDIT YOUR STRATEGY, and scroll down to the "Delay Closed-Trade Reporting for Non-Subscribers" section.