If you are a MinglePlus user (Premium Subscriber), please go to https://mingle2.com/user/toggle_stealth_mode to turn on/off your stealth mode feature.
Please note that: The drawback is that you will get fewer responses from other members in Stealth Mode because they won't know you are interested. We recommend against remaining in Stealth Mode for long periods of time as you will end up meeting fewer people as a result.