Thanks to Martin for putting this together.
There are nearly as many ways to rig a slackline as there are slackliners. This is the way I do it to keep the line as flat as possible while using a small number of biners to keep the system nice and light.
DON’T make a highline with this
Basically, this is an Ellington system with a secondary 3:1 pulley. more_link_text