What triggers Autoswath (AS) to turn on/off NH3 flow if using Insight/DC/AS? Our 37.5' bar has only 1 valve for the entire swath, by the way. I'm just wondering if Insight/DC is worth using to turn NH3 on/off.

I assume you have to apply (or...can you just drive?) the ends first to trigger?

So-how would you tell AS you want it to shut off NH3 3' before picking up bar for turn? I guess I don't visualize the whole concept.