If I'm not betting, I don't care too much about the terms.
But, like I said, if I'm betting, not sure I'd do 1, but would do 2, would have to be within a range of like 10-35, I have to be able to stand on it, measurement has to be done with my device that I'm used to. (if it's off, I'm off, but it's a pretty good device)
http://www.solmetric.com/buy210.html
No one mentioned this and there's no way to stop me, but on the wild chance that this happens just so no one thinks anything shady went on, if $10k is being bet, even if it's not by me, but by people I like, I'm sure as hell going to practice and let them know. If you lose, you'll assume I did that anyway, so just expect it.