Step one, tie a knot one meter up from the end you want to splice and make sure the the end is taped and not burned.
Step two, measure up a length of your splicing needle from where your loop should end, mark and call it 1.
Step three, open up the line at 1 and tape up the end of the inner core where you took it out mark and call 2. Now the fun begins. Measure it up with 2/3 of a splicing needle and call it 3, measure one whole needle and call it 4.
Insert the outer casing into a splicing needle and push the needle in at 3 and take it out at 4. Drag back so that the outer rope just disappear into the core again.
Now insert the core in to the needle and go into the outer casing half a centimeter from where the outer rope goes into the core. Proceed until you come out at 1. If you can’t do it in one go just open up and drag out the core and go back in again.
When you’ve don it all you should end up with something like this.. Now tape and cut the inner core 1 cm from where it comes out of 1 and drag back the outer shell from the knot you tied in the beginning. The inner core containing the outer part of the rope will go back into the rope leaving you with a nice loop for your mooring line or what you might want to use it for.

We used it making our rig for hoisting our dingy.

Thada!! Good to go..