Quick Take: Ikan F3 Friction Follow Focus.
Here is a Quick Take Video on the Ikan F3 Follow Focus. It is a friction based follow focus and does not require a lens gear. The rubber focus wheel goes directly onto the focus barrel of the lens. It is not the most traditional follow focus out there, but looks like it will help keep things in focus. The Ikan F3 is around $200 US. Click here to check it out.