I got a winners choice string and cable for my cybertec and noiced that it made much less noise that the stock string. I didnt add any thing to the string and found it was quiet enough for me. On the other had I saw a Ultratec with a WC string and cable and it sounded horrible with out a catwisker at the bottom. Keep this in mind you will loose feet per second for every thing you add to the string.
I say try it with out anything, if nessary add a catwisker to the bottom but cut it short making a 1.5" ball. Try it again. Then add one to the top. If the top one makes no diffrence then use only one. This way you only add what you need and dont loose speed unnessarily.
This is just my opinion it works for me some hardcore hunters my think im crazy.
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