The absolute low end for the Zephyr is achieved by removing the upper spreader, removing the tail weights, and adjusting the bridle. Before doing all that I find that it likes > 4 the best. That's why I like having the 4D also, for the 0-4 days, much less low wind skill required to keep it in the air. In the right conditions both hold a fade well.
Anyone getting in on Friday and want to fly? I am hoping to get in early afternoon and want to get used to some wind. Been hot and humid in Va with sparrow farts (sorry but a perfect description) as a breeze occasionally, suspending the sail for a moment before reverse gliding and recovering all the backward momentum. Hard to pull off anything else unless you run for it. Can not wait till the kite pulls on me a little for a change!