Right, I guess the point that I'm making is that if you concentrate on one box, and it's of the wrong level to gain, you will be wasting all of your time until that box disappears and a new one appears, and then you will maximize gains only if that new box is in the right range for gains.
By cycling all the time your chances of hitting a box with the correct range to gain is greatly increased.
I'll put a statement in my script... For maximum gains use the correct level of tinker trapped boxes in your backpack. If you only have the ones for your level of gains on you and stand in a location without any other crates/boxes/etc... then you will always cycle the correct ones.
Actually, now that you have me thinking about it.... have 3 boxes in your pack. One from a 30's tinker, 60's tinker, 90's tinker... have the setup identify which one is which and have it detect ONLY on the one that maximized your gains for that level, then switch to the next.