I find the spot I like in the bridle adjustment and almost never touch it again. Generally, I like to bias towards nose-forward. If the kite's not flying in lower winds, I usually take out a lighter kite. The Nexus likes 5-15mph, and like most Prism kites, it flies with a heavy-butt feel. Doesn't mean it won't fly, it just flies slow...
If you fly the Nexus in lower winds, it will teach you how to fly a kite like the 4d in zero winds.