Ok I'll try to explain it better.
The first and main knot is the Bachmann Knot tie this so the gate opens at the top.
The second knot is a single rope Prohaska Knots this is tied to your fixed end.
Like the Blakes double you can now just pull the tail and the knot will advance on it's own. As you are going up if a limb is between your rope you can lanyard up, unclip the second knot from biner, unclip your fixed end and move it around limb, and continue pulling up.
Should you need to change tip points you can do the same without having to untie the main knot?
make sence?