I don't know how well it'd work, I've only tried it with leos...
If you've got a solid floor (concrete, tiles, linoleum, wood, etc..) dust it with flour.
Now, with leos you look for the foot prints... this would cause a problem, heh.
Although I would imagine a snake would still leave a fairly distinct pattern.
Could give an idea of where it's going and hiding.
Then just keep an eye out and watch for him coming out at dawn and dusk where you see the trails leading (or actively start searching where they lead).