Hide Incognito Mode is a web browser extension which helps prevent websites from detecting when you use your browser's incognito mode feature.
You can find Hide Incognito Mode on the Chrome Web Store
The most recent description of the extension can be found: README.txt
See the "Usage" section of the extension description for usage tips that will significantly improve your ability to evade incognito detection on some websites.
A description of how the extension works from a technical perspective (intended to be read by programmers): how-it-works
You can also download the extension in zip format for manual installation purposes.