This Thread is a Guide to the Knotless Knot and Basic Rigs
Here is the Knotless Knot as used for many basic Rigs, also a set up that can be used to create a pop-up rig.
It is as simple as attaching a hook with a knotless knot, and in many or even most cases, simple is best. There are sometimes when a rig needs to be slightly upgraded and by adding a Line Aligner then you can create a more aggresive hooking angle