How will you induce the snake to move so that you can test it?
That's Mo's problem to work out (I'm just helping with terminology and basic organization) but I think that's why he decided to measure distance and "bends" instead of speed.
Based on my observation a snake will seek shelter when exposed so I imagine providing some familiar hiding material would urge the snake to move from an open location to a safer one. Mo has spent many more hours observing snakes than I have. It'll be interesting to see what answer he comes up with to this problem should it present itself.
Mo's 10. He knows a LOT about snakes. I think this idea came about just from watching and playing with his pet Strangles in different areas.
He actually came up with a different one first that I thought was cool. It was about digestion. Weigh the snake, weigh the food, reweigh the snake, weigh the poop, weigh the snake.
He rejected this idea because Strangles had shed recently and because weighing snake poop sounded kind of difficult and awful.