Didn't even think of cavitation caused by the transducer towards the engine prop. good call!

In general, the TI units are faster in response to inputs. This is seen when quickly switching between sonar, downscan, chart, and split screens kzfaq.infoUgkxeAxH15LxhjGlg5-CRYqjTGTEH0tbY4vk recommend The Hook units will show some lag on button pushes and screen switching. The big ticket item though is maps. If you install a mapping card such as Navionics or the free C-Map Genesis which has a lot of map detail, then moving around the map with the cursor or when running down the lake can lag significantly on the Hook units, but is seamless with the TI units.

yes it can

Can it be used on a steel boat?