Speedlining IMO is best approached moderately, in terms of the weight you're dealing with. The go big or go home mentality'll get yu killed real fast unless you understand the forces involved?
The branch in the pictures above was taken in three sections for a reason. I did not want to exceed what three groundmen could easily anchor with only twelve feet of travel.
An experienced speedliner will note that there are three lines coming down at the same angle as my twin bodylines.
This is proof that I've redirected my Speedline to anchor on the branch that I'm working via nylon loop and Steeel carabiner.
Why, a rookie asks?
Because the branch being removed in the photos was situated 180 degrees off the direction my speedline had to go. By redirecting I had reduced my three groundmen's slack take take up travel distance from twelve feet to three or four feet of back pedaling in tandem, total distance traveled, to maintain a relatively taut speedline, moving in the direction you are making it travel, with your finishing cut.
Kinda like speedline basics from a guy who's put it to good use on many a job, and been well compensated for it.
Dude who took the pics is another Vietnam vet as I recall.
jomoco