I have put together a complete retrofit kit for the GNAV system which utilizes a roller bearing car and track. The kit includes the Harken track, end caps, roller bearing car, track fasteners for the boom which requires no drilling and a custom shoe designed to accept your existing strut. The total cost for the kit is $180.00 which includes shipping. Please contact me directly if you are interested.
Paul Zimmerman
[email protected]
Paul can you retro these on a tin rig.
The GNAV will work on a tin rig. You will need to mount a gooseneck fitting on the mast for the upper portion of the GNAV strut. You will also need to get the strut itself.