Ya ya ya Jake; links. Here's your link. This is a link to MB that demonstrates how you can match two tracks against one another, even if they are done at a different time.

For direct, boat to boat comparison, you would have to cooperatively upload tracks that all begin at the exact same time of day. MB seems to "dot race" the tracks by starting all compared tracks at the begining of each track, regardless of the time of day.
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*edit* Nevermind. I found the button on MotionBased that says "real time." That should take care of any sychronization issues when comparing tracks. GARY
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Four tracks at one time - Channel I... County, Los Angeles County, California.

GARY