Nr. 1.
Very simple post eye tying… with a bit of practice 
there are many variations of the base Idea, all seem to be secure knots. To me the one shown below stands out.
It involves two collars that I believe stay loose in loading.
The half twist of the bight that reenters the nipping loop, creates the particular geometrie of this version. It is more balanced and compact, and keeps the nipping loop from moving. It is remarkably hard to shake open.
The ease of opening and untying seems outstanding to me.
have you tied it yet? can you find flaws?
