While it is entirely possible to use SI at the TM for a search tool ...not everyone prefers to use the SI technology that way...
Some fisherman use SI at the transom to find and mark "fishy" spots ...and then move to the TM to employ 2d or DI technology to fish it...and some simply toss out a buoy and fish the buoy from the TM....
The SI technology requires boat movement to build the SI image ...because the SI beam is a thin slice ...and the SI image is a compilations of these thin slices "stacked" together to build the SI image...
The 360 technology creates it's own movement by having a rotating beam...which means the 360 can be used very effectively sitting absolutely motionless...
Like you said ...another tool ...with certain attributes best suited for different applications...
Rickie


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