mark wrote:
A picture speaks 1000 words so here is a link to our industry with
pictures.

http://www.confederationcove.com/ima...bum.cfm?aid=13

As the mussel "socks" grow they become heavier and eventually will
touch bottom were predators such as starfish begin to eat the mussels.
We like to keep the socks approx. 1' off bottom, this means either
picking up the socks and looking for starfish, diving or using an
accurate sounder. The sounders I mention are able to run either 50 or
200khz, does this mean a dual frequency transducer should be available
or do I have to choose 50 or 200?

Got the idea now - interesting.

The Sitex is selectable, so select 50 KHz.

Is this muddy, rocky or sandy bottom we're talking about.