Yes, I tend to compulsively weigh myself whenever I see a scale.
Every scale will weight differently, so you need to pick one scale and stick with it. Weighing on other scaes will just continue to frustrate you. (Personally, I would pick the lowest of the bunch.
) Congrats on the bungee jumping! It's something I would love to do but I'm afraid of heights, so it probably won't happen.
HTH