Bit confused when looked at this,does it have side scan on your unit ? shows that it doesn't come with it ,chirp/downscan ok but no side scan,yet people are advertising with the triple shot.what did you get with the unit and does your unit come up with the ability to set any side scan settings.As you have chirp you would not want to lose that.

http://www.airmar.com/productinfo.html?category=CT&name=CHIRP-Ready%20Transducers

P.S.
Sorry just saw that Hook 9 does come in two models,one with side scan and one without.triple shot with and double shot without.