"Well, you'd have to jump almost a body length . . . a human body length, that is. I got no idea how to trip it, just that it has something to do with that section of the hall."
[sblock=OOC]For the roll I went with Disable Device, but since what you're asking of him is a mental application rather than a physical I used his INT modifier rather than his DEX modifier. So he got 'credit' for his ranks and class skill, just not his physical ability.[/sblock]