w00t! I figured it out...
Whoever has the time to do it for a whole track, though, has some serious issues. In order to do it while maintaining normal gravitational speed would take 3 or 4 settings adjustments on every single segment, when each segment is only about a foot-and-a-half long. Pretty ridiculous... after doing the math, if you did this for a whole coaster, it would take something like 7 hours, and that's only if you can make a complete segment adjustment every 10 seconds.