Hi kebes
I ended up lacing the front toe part about medium tightness, then i did the double over knot thing in the video on the lace before the heel locking lace (that sits lower and offset). Then i reefed on the 3x so it was tight i pulled, then pulled a little more and then one last time. Then i tied another double loops knot thing after that... Essentially so the heel was loops was locked in place super tight. Then, i looped the following lace in medium tightness, another knot to lock that off.. And the top 2 laces i actually leaned my leg forward a little to simulate the ankle bending to climb a hill and tied the 2 top somewhat loose.
I also adddd a pair of very thin socks under my thick merino ones which helped a little but the lacing did most of the trick!