Quote Originally Posted by lhumphre View Post
Can you use the side imaging units to read depth when at full speed going from spot to the next? kinda stinks if you cant...
Some people can, some can't - it's a big ole honkin transducer, and I think
it's a little hard to get good water flow across the face of it at speed,
at least on some boats. I've got about a bazillion humongous rivet heads
on the bottom of mine, so I didn't even bother trying.

They've got a "fix" for this too, they have another cable that lets you split the SI
from the "down" and use a regular, smaller transducer or through-hull on some boats
to get a bottom reading at speed.