I loved the idea of making my gorillapod into a dolly, but mine is the video edition, and a bit smaller than the original. I use it with a glif to take video with my iphone. One advantage to the video gorillapod is that it has magnetic feet. I figured I could use some metal brackets and some bearings to make removable feet to make my tripod a dolly when I wanted it, and then remove them when I didn't want them. It worked out pretty well! I picked all this hardware up at the store for under $8.00.
Permanent Marker (optional)
Pliers or Vise (optional)
Dremel or Grinder (optional)
4 1" corner brackets
4 7/8" tub enclosure sliding door rollers (oval)
Step 1: Screw the Wheel Onto the Bracket
That is it! You can attach the feet to the magnetic feet of your tripod. It will now roll as long as it is standing upright. To get some more flexibility you can round off the corners of the bracket. I will cover that in the next step.
Step 2: Round Off the Corners of the Bracket
You may also want to use a little sand paper to roughed up the wheels so that they have better traction and to take off any plastic nubs left from the molding process.
Step 3: Improvise
Good luck with your own project!