We smashed in climbing pitons like you use for hard aid routes in big walling and then…
PULLED THEM OUT with a pulley system and a dynamometer. Lots of stuff on our slacksnap chart, these tests were samples #950-#958… all on our website.
Email passthepitonspete@hotmail.com if you want the book “Hooking Up”.
Dynamometer is LineScale2 https://www.linegrip.com/linescale-2/
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