Nice photogrqphy. Excellent knot for many uses just not this one. Tie that at night in a cold rain. Anchor point knots should be simple and quick. Your life migh5 depend on it.
I was curious if others use this same technique around an anchor or ring and found this video below. It appears to be a standard method. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GFlwrvggas0.html