There isn't one!
I like a good knot and know more than needed to get by.
I think if you have in your know how to tie one from each of these categories then you can cover most bases
- a loop in the end (ie figure 8, bowline)
- line to a pole / branch (ie clove hitch or round turn two half hitches)
- two lines together (ie double fishermans)
When tying off my oil cloth shelter, or constructing a primitive brush shelter, I use the reef knot, also known as a flat knot. Easy to tie, holds firm, & easy to untie.
A reef knot used to secure a brass wire leader on an 18th century fish hook.
Rawhide reef knots securing the joints on my Cymru/Welsh drag cart.
& that other one that wraps around the tree to add tension; I've never got on with either of those two & think there are better alternatives. Still, each to his own eh?
Do you mean the one where you wrap it round the tree once, over the line then back round the tree the opposite way, round the line, etc?
Yes that's the one Stew; anyone remember what it's called?
(I'm still using and enjoying the Dave Budd blade you handled and sheathed for me a while ago by the way; really like it!)