Finally got the chance to use the FF slab donated this evening. Seems to work ok, however being that I've never used one I'm needing help Identifying what's on the screen. I can tell fish but that's about it. Any help is appreciated

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It says 16ft. Bottom looks like 25 ft or better?
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The top of the weeds 10ft? Bottom 15?

Also, FF is called a side finder. So is it SI? Seems to me is DI correct? Sorry if these are dumb questions I'm just super confused