Humminbird Fish Finder HELIX 9 SI GPS Review

December 2015 marks the launch of the HELIX 9 series by Humminbird, which actually replaces the 900 series. Evidently, one of the most complete unit of this new series is the HELIX 9 SI GPS. As it’s name suggests, it’s a unit that has Side Imaging, Down Imaging, GPS, and comes with the preloaded ContourXD maps.

In terms of sonar, the HELIX 9 SI GPS is pretty similar to the read more