Eye 2 eye?

[Brett]

It might just be my eyes but that top knot looks wrong to me, double check your fishermans knot.

[Brett]

Correct fishermans knot

 

Not a correct fishermans knot

[Loler UK]

It is the scaffold knot (single fisherman's is another knot entirely not to be confused with this)

 

Tail length is hotly disputed by some, I, like Martyn will fail anything below 2x so advise people to tie, dress then use both arms to set the knot by standing on wraps of the opposite/ a sling attached to the opposite end, once this process is completed i advise people to have a minimum of 3 diameters so there is a little wiggle/ interpretation room.

 

I must stress this is the guidance i give out for the tail length on double fisherman's and scaffold knots tied with class 1 fibre cordage, appropriate lengths for other knots and cordage may vary

[Tommy_B]

Shouldn't all knots be untied for LOLER anyway? Can you fail something for tail length?

[Martyn Honey]

Some double fishermen knots are so tight, they would take forever to undo, so I just inspect and make sure they are tied right.

If the knots are wrong or too short and I can't undo them. I cut them with a rope cutter