That is the Thumb knot
I was taught that at the conger championship many years ago, by a huge chap that used to treat is as a party trick, tying a 12/0 hook to 400lb mono, then towing the pub benches about with people sat on them.
I have taught that to Members after monthly meetings and on the boat loads of times.
100% success with that knot, has never let me down, when serious fishing and on thicker lines I always use it.
as with all knots , the more they are used the easier they are to tie.
that said I tied some tuna traces with big circle hooks using this knot and the boat skipper refused to use them, insisting that circle hooks should be snelled on. doing that with 150lb mono takes practice. But I retied the lot before day 2.
Look forward to when we can have meetings again and share some of these skils
Charlie