If you put a nylon or metal cuff in the end of the eyelash, it does not break, and the hammock has a longer life.
If there is no jaw in the end line eye, and there is no fixed knot as a flag knot, the hammock can be broken quickly or by the violent swing after a few hours / days.
However, keep in mind that you tie a flip flop of electricity. pile stick, do not use a kovs. Then there's a scratch and metal, hook-up files that do not know the end of the eye.
A kovs in the suspension strings protects against fiction cabins, so do not thread files over by incorrect setup.