If you have a table dolly, you'll know the importance of using a smooth surface to get the best footage. It won't solve every odd surfaced situation, but for most common imperfect surfaces that small table / skater dollies require, here's the Pico Surface Mat.
The Pico Surface Mat offers a thick Neoprene material with a heavy rubberized backing that will allow dollies to track sideways, forward, or back (basically straight across the mat) and reduce tracking vibrations normally caused by floor tiles, concrete, and other slightly textured surfaces.
Measures 46" inches across and 8.5" wide, and can be rolled up during travel. Due to the weight of this item, it's only available to ship to lower 48 US States (FREE SHIPPING). Check out the new Pico Surface Mat over at PhotographyandCinema.com.
Pico Surface Mat Neoprene Rubberized Backing