David, this is what I did for the FG but in a different way, without the tube, can be seen on the first 2 pictures and the last picture is the knot at the end after tightening.
In my case
I find that this finish of the knot is not strong in time, it becomes soft, some fishermen put a little glue to avoid this, I do not like at all, but of course everyone is doing well as he wishes
I have perhaps made progress in English but it is more tiring than fishing a GT of 50k with a popper Ah! Ah!