The Bohning Tower Jig is a great setup for knocking out arrows in a hurry, my only complaint is that you're limited to 3 vanes and you can't customize the distance from your nock to the back of the vane...but the new Multi-Fletcher from Bohning takes care of those needs as well, and has quickly become my favorite jig.
Bohning develops and manufactures high-quality products for the archery, bowhunting, agricultural, fishing, and golf industries. Bohning has been located in Northern Michigan since its founding in 1946.
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The tower jig has become my favorite and most used fletching tool.
To vary the distance from nock to vane end, I simply put a piece of painters tape across the slot the vane sits in at whatever spot I choose, making sure all 3 are the exact same.
Have been doing the same arrow and vane combo for several dozen arrows now, I think I had to add another piece of tape one time. Works great for me and is a very fast and accurate fletching system. It also works great for replacing one damaged vane, just stick the other 2 in and it is lined up perfectly.
Used a one vane at a time Bitzenburger for years, still have it, never use it. Wouldn't go back.
Haven't seen the new multi-fletcher, will have to give it a look.