I just setup a governing block on the cam that pulls the cruise cable. Essentially, it will pull the throttle setting (in my case, a ~12% throttle limit) up to the set speed, and then on hills, modulate the throttle for the set speed as usual. If the limit is hit on a hill or in strong winds, the load-up/slow-down occurs. It overshoots the setpoint a bit on downhills, but not much. It's still good if you need to focus on other things, or are too fatigued to hypermile.
RH77
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