No sound? All my testing has featured minimum suspension so I've not experienced the wild pole movement you've seen. So: set ridgeline to .83 hammock length, and connect as direct as possible to apexes.
Have yet to work out minimum pole lengths for given hammock length that support reasonable seat height with poles reliably clearing shoulders/feet laying diagonal.
Yes, the base strap delineates the safe "stand here" area from "nope."
Off to pick up some poles in the rain before work on motorscooter...
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