Tekna DV-3X harness help

Tomorrow is the first wet run for the scooter. Could someone with a past experience with a Tekna DV-3X please teach me how to rig a tow harness. I have seen some examples but most pertain to the Mako with the plates at the base of the handles with holes. I was planning on using 1/8" paracord which has a working load of 100 lbs. I have read that due to the cord being too thin it will not hold a prusik, Tautline Hitch or a Rolling Hitch knot (or what others want to call it). So I have an improved clinch knot for the left handle and the prusik for the right side. I figure that it will allow me to extend or decreased the length as needed. I will also use a snap bolt that can slide freely or do a single wrap in order to gain better control. Am I on the right track? Please advise.
Thanks!​

WHAT A BLAST TODAY!!! A buddy and I hit the quarry late in the afternoon and got kitted up for a first time for me and a second time for my buddy using a scooter. As for me, the dive started out well but I found that the Tenka was very nose light and I see that there is no need for the neoprene wrap. Without it it would have made the dive better. The paracord worked well except that the line was too thin, as stated by others, to hold the knot and it slipped off the handle several times when stopped. Not a great problem because I was looking for it to happen. Also, the harness does not need to be so long...and the closer I was too the scooter or even better over it, it made the dive very relaxing. I totally get the handle at 12 and 6 o'clock position concept. I just turned it sideways and it worked well. I also found out that it is best to get off the trigger at least 10' below your deco or saftery stop because you can change depths very fast with a scooter. I really need to add a depth guage and compass to the scooter. I also think that I will go with 1" webbing next time out. I think that I found the right length and see no need to adjust it on the fly.Thanks for all who helped me.​