I received a Helix 7 Chirp SI GPS G2N unit last year as a gift.  I used the unit for the second half of the year.  The side images were not as good as I would have liked and really lacked much definition at all.  I am curious if upgrading from the compact transducer is the fix that I need.  If so, which transducer is compatible and would be a good fix?  
Thanks!