In the wristmount video, andre goes to the side angle to show how to dismount the second way, and thats where i lose him.
i figure that once you go on a second time, you drop the wrist and a pointer string, but i always get a knot, so what am i doing wrong?
You only land on the back string (the string closest to you) then drop the wrist and you will land in a trapeze, dont drop your index.
ohh. i’ve done that a few times on accident…but now that m actually trying to do that, i cant. i guess i just gotta practice.
You can try:
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Underpass once.
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Drop strings off throwhand wrist.
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You should be in a weird GT. If so, pop out the back.
Hope that helps!!! 
It helps to have your throwhand curled towards you when you land on the backstring.