- Go to the extension page. This can be done by clicking on the uBO extension icon and clicking the settings cog icon.
- Go to the "My Filters" tab.
- Press the button that says "Allow custom filters requiring trust" - this allows some of the filters to work properly
- Download the filter list and import it using the "import and append" button at the top.
- You're done!
Seems to work well on Firefox, your results may vary on other browsers - this is by no means a perfect filter list, but it should improve the YouTube experience!