I spin my arrows with a pointed field point on the end on the end of my finger and spin the arrow with my other hand.
If there is a lot of wobble in the shaft you will feel and see it.
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"Minister of Information for the Royal Kingdom of $Tree"...
The common mistake people make when attempting to design something completely Idiot proof is to underestimate the ingenuity of complete Idiots.
You have to spin the shafts with the broadhead on them. I just put the thing on the table and spin it with my right hand. I look at the broadhead not the nock. If you see a wobble, change the broadhead, if it is still there it must be the insert.
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"If you are 20 and not a Democrat, you have no heart. If you are 40 and not a Republican, you have no brain"
arrow spin
