Just thinking out loud here since I don't have my FatBoys onhand, but if I recollect the FB's come with a super-unibushing system installed in the shaft. If so, then Carbon Tech makes a pin nock adaptor for one of their arrows which fits inside the Easton super-unibushing pretty nicely. After which you can use whomever's pin nock (CT, Easton, GT, B.I.G., etc.) you wish. I have some FB 500's and 400's both set up this way with the CT pin nocks and it works very well.
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