Firstly when I say Fish Finder I actually mean Fish Finder / Sonar GPS Chart Plotter, or whatever you may call your particular Marine Electronics device. A "Fish Finder" as we will call it from now is probably not on the list of a "Must Haves" when you first purchase your Jetski or at least you are probably thinking that you have to purchase the lowest cost you can get away with as it probably will not make much difference anyway. You could not be further from the truth! from my own personal experience once you have a fish finder and it is taken away it will be like driving a car down a dark road with no lights. yes its that important to me. Actually more important to me is the Chart Plotter as you can always ask a mate to supply you some GPS marks. The different types of fish you target may demand a better quality, or different type of fish finder, but more of that later.
There are basically two ways to mount a Transducer onto a Jetski. Internally and externally. Prior to 2013 / 2014 the installation of choice was to mount an Airmar P79 insdie the hull. This type of transducer is filled with antifreeze or light oil and worked extremely well if fitted correctly! The benefit of fitting an in hull transducer is that when beaching and trailering / de trailering the transducer is protected. The downside is that you need to fit an external temperature transmitter. With the arrival of HDI and Chirp technology
MOUNTING THE HEAD UNITS
Remember as you add Marine Electronics, Pumps etc it is extremely important that you add a dual battery setup to your Jetski. LINK