To set a line in a tree normally a throw bag(small canvas bag filled with shot) is attached to a small diameter line that is designed for this and either thrown over a branch or a large slingshot is used called a bigshot that propels the throw bag up into the tree.Once a proper TIP(tie in point) is isolated the climb line is attached to the smaller throw line and advanced.Usually a cambium saver or friction saver is added at the tie in point to protect the tree from the rope. Hope that helps a little.