Zinger11

Check URL below. They may help. This official Cannon info fo filter it 

Pages 57 to 59 speak to bottom tracking and specifically pages 59 and 60 shows the sensitivity and offset adjusting.  

https://cannondownriggers.johnsonoutdoors.com/sites/johnsonoutdoors-store/files/assets/misc/CN/C/CNN_productmanual_optimum-manual-EN/CNN_productmanual_optimum-manual-EN.pdf?_gl=1*6qw314*_ga*MTI2OTMxNTY2OS4xNTczNjY0MzMx*_ga_VFQZZWTT48*MTYxNDk3NDc4Ny42My4xLjE2MTQ5NzUzMDEuNjA.&_ga=2.114098119.1916931951.1614790992-1269315669.1573664331

Bottom tracking

https://www.cannondownriggers.com/learn/technology/bottom-tracking

Depth cycling (if interested)

https://www.cannondownriggers.com/learn/technology/depth-cycling