You can also experiment with "Recalculate" in the routing settings menu. If you turn off recalculate, my understanding (I don't have a 705, this is from riding with people who do though) is that it will no longer do those shortcuts, but it will get confused and stop navigating you in the event you end up on a bike path that the internal maps don't have. After getting off the path, the GPS needs to be able to "recalculate" your position to get back on course. The newer firmware versions have a "prompted" setting for this, so you can keep it from doing it in non-optimal times.