Hi there,

I am having a fun with SI / 998cSI. :-)

It is really useful tool and brings lots of discovery but it also confuses me at times...

Today I was moving my boat by trolling motor around 2 - 3 mph at very shallow water (around 3 feet depth) in the backwater area of a reserver lake.

As the water is very clear, I can see everything around me in the water, and I found a large carp (around 2 feet length). I am very curious how the SI shows this one, so I approached besides of it. The SI range is 45 ft wide for right/left and sensitivity is 10, chart speed is 3, frequency is 455khz, SI Enhance's Sharpness is "Low".

I was pretty confident to show the fish in the SI, slowly went through its left side (I remember 20 - 30 feet far away) but ... the object (the fish shadow) didn't appear in the screen!

Can we explain how it didn't show up in SI screen or do I miss anything, any insight?