It's HERE!!!  Spinal TAP is done and ready for public consuption.  This little program for about the cost of a good arrow can save you HUNDREDS of dollars perhaps the first time you use it!  This only takes into consideration the cost of the arrows, when you take other things like time into account, it will save you even more!

Spinal TAP is HANDS DOWN the simplest way to see what arrow is going to work with YOUR bow PERIOD!  You simply enter either your own specs or the MFG published specs and the well trusted TAP Algorithm goes to work and tells you the EXACT spine you should have based on what your arrow building selections.

You can also play around and see what happens when you change arrow and bow variables on the fly!  Take a peek at the screen shots and see just how simple this is!




  • New TAP PRO Version
  • Added Pin Gap for setting fixed pins easier
  • Fixed saving labels
  • Fixed Metric 'Two Sight Marks'
  • Added support for the HHA Line of adjustable sights.  Simply select and go!


  • It was hard to find anything to change!  The only feedback I have gotten since this was launched in 2010 was to add the ability to go beyond 99 for the second mark.....