how exactly do you spin your arrows to make sure your broadheads are lined up properly?

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.

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.