Moving tethers to new anchor points

[PierreB]

@Rodread

Take for example this old design based on a concept originally by @kitefreak

@Rodread

A field robot which can move anchors

@Kitefreak evoked some mean (a crane) to move anchors for the scheme you quoted by the first video (Payne figure 5). There is an evolution in the lightness of the means envisaged.

What is possible with Payne's patent US3987987 figure 5?

It is for me, since I am experienced since childhood in sailing, rigging, and crane work (up to 600ton rating), where anchors are shifted all the time, fast and easy, >10 belays/hr. The crane is a shifting anchor existence proof.