RE: Speed Nocks
Speed nocks are in most cases just a few (3 or 4) brass nocks crimped on the string about 2-3" below the cams. TruBall makes some weights they call "speed balls" that are screwed together rather than crimped on.
The biggest thing with speed nocks is that you need to find the "sweet spot" where you will pick up speed. Just crimping them on and winging it may actually slow your bow down.
You need to start with the nocks attached to the string by both cams. Shoot a couple of arrows through the chrono then move the nocks in one direction or the other by about 1/8". Shoot through the chrono again.
Keep doing this until you find that sweet spot where the bow speed peaks out.
If you are using crimp on nocks, remove the string and slide a piece of heat shrink over them and shrink it. This will keep them from flying off if they loosen up.
In my experience, the gain you get from speed nocks (3-5 fps) has never been worth the hassle of getting them in exactally the right place. Too much futzing around for too little gain.