WS adjustable tension
Real simple. WS with fixed loop at other end. Attached to shock cord with what may be an Anglers loop or "perfect loop". Loop holds tight in stretchy line like shock chord. Attached so I can access it from the left side (as you lay on your back) of the WBBB or Traveler. So far have not needed to tighten it at max length to seal the Yeti. Hammock is still "lifted" by the Yeti when empty. Just not as much as before mod.
Total extra length is ~12" (~9" within the WS loop).