When a 3 point bridle is under tension, all the legs are rigid.
But that tow point shifts all over the place during slack line moves.
Has anyone played with having 1, 2, or even all 3 lines as inflexible links?
With 3 solid bridle links, dead launches should be easy.
With 2 solid bridle links, the bridle could still collapse, allowing fade tricks to work.
I can't think of a benefit to having 1 solid bridle link.