Any small tripod with a fluid head will work. The head is the most important part of the equation, if you don't get a fluid head your video will not be as smooth as you want it to be. If it were a perfect world the arrow trick would work perfectly, but if you have to pan the camera either way I could see how you could get in trouble quick with that setup.
If you aren't concerned with the quality of the video you can go to any walmart and buy a small tripod for under $30.00 that will work fine.