Making a tie-on nock point is super easy. I like using B50 Dacron but even dental floss works fine. Use simple overhand knots, about 4 to 8, pull tight, coat the nock point with thin CYA (Krazy Glue or most any SuperGLue will work), allow to harden, snip off the tag ends with a nail clipper, recoat the nock point - lightweight, durable, won't harm arrow nocks like the metal ones can.
Here's a very good reference page on hand tying a nock point -
http://www3.sympatico.ca/ragiwarmbear/diy/ton/tie.html IF you don't know where your nock point should go, you NEED to experiment.
For a test nock point, the metal band type works great and is movable.
If you coat the string's center serving well with wax, then tie on your nock point not so tight, you should be able to swivel the thread nock point up and down the center serving - kinda like a threaded nut on a machine screw.