If you want to go beyond the first limb, it is necessary to understand the principles involved in advancing your rope. In tree climbing, every time you set another anchor above the one that is supporting you, it is referred to as "advancing that you are on to the next anchor limb. You then proceed exactly as you would if you were on the ground starting your first pitch. For some reason, this seems to be a hard thing for some newcomers to get a handle on until it is tried, but it is as simple as that.
In the double rope technique, when you attach your second anchor (using the other end of your rope) put your full weight on it to make sure that you have set it up correctly before you untie from your first anchor. This should be done at each anchor change. It is impossible to do it any other way if you are hanging while changing anchors. It is easy to overlook this however, if you are standing or sitting on a limb.
When you are fully set up on your second anchor, you will have to remove your first, anchor. It's okay. Remember, you checked the second anchor. This is done in double rope climbing by untying the Blake's hitch below the first anchor, unclipping the carabiner for the first anchor from your saddle and passing it over the limb. It is easiest to clip this to your saddle, ready for the third anchor. If you have used the double split-tail, you need only unclip the carabiner of the first anchor from the delta ring.
hi single rope climbing the sequence of anchors is the same but there is no Blake's hitch to untie.
Each subsequent anchor can be rigged however you feel would be the most practical, the safest or the easiest for you. Re-rigging from a double rope to either a single or double rope is a fairly easy operation, as is switching from a single rope to a double rope. Switching from a single rope rig to another single rope rig, although it is a simple operation, deserves an explanation:
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