make sure the knot is where the line is doubled (that is on one of the splices) since a knot halves the line strength
Dyneema is slippery but an overhand or figure 8 will definitely hold. Just have to tighten it properly first before you load it.
So . . . use whatever you like, both knotted lines and spliced lines work. I will usually use that spliced and knotted line above for my pigtails because they are clean to use as both loops and knots.
it takes 60 cm of line to make one of these 15 cm long pigtail loops just to let you know how much line you want to start with.
I think he's doing loops to knots so no point in using needle & thread the knot locks it in place
I think I've made 100 of these pigtails in the past 10 years. I've snapped about a dozen lines over the years, torn attachments in death loops etc., but these spliced loops have never been a problem always held up.
Not sure how a brummel would work in the loops above, because you have to make the knot somehow. I just use a simple splice.
I know you could make one end a loop and one end a knot just seems like I get a shorter pigtail if I splice a loop with a knot in it.
If you make the above pigtail makes sure you use regular kite line not that thick leader since it's a loop the line is doubled and you don't need the extra strength of a 3mm leader line, 1.75mm kite line is plenty strong.