I would like to get some info about fishfinder:

1. Is this OK to mount a "shoot through hull" transducer right at the
center line of the boat hull? The center line of the bottom of the hull
is smooth; therefore, I am not expecting any turbulent at the center
line. The reason why I ask is that we are not supposed to mount a
transom-mount transducer at the center line where the outboard motor is
to avoid the turbulent from the propeller. I am hoping that this
restriction only applies to transom-mount transducer, and doesn't apply
to "shoot through hull" transducer.

2. Is "shoot through hull" transducer good enough for scanning the sea
bottom for fishes? In other words, I would like to know if I can use
the fishfinder as a fish-finder instead of using it as a depth-sounder
if I use a "shoot through hull" transducer. I only intend to use the
fishfinder in shallow water, like 10-ft to 150-ft; hopefully, losing
some range will not be a problem.

3. Does 3-D fishfinder present a relatively static picture instead of
scrolling endlessly like a regular fishfinder? I have a hard time to
interpret the scrolling image displayed in a regular fishfinder to
relate it to the sea bottom. I am hoping that a 3-D fishfinder can
solve this problem. Yes, I have already read a book about fishfinder;
but I still cannot interpret the scrolling image.

4. Is 3-D fishfinder any good? 3-D fishfinder seemed to be "hot" a
couple years or more ago. Recently when I checked Cabela's web site, I
could only find _one_ 3-D fishfinder. Is this 3-D technology too
immature that no other manufacturer wants to try?

Thanks in advance for any info.

Jay Chan