yeah--got the same one--you should have seen it at Grenada last weekend--nothing but trash in the water (I think just the particals/silt floating)
Most of the time so far when I have seen a fish on 2d it is just a white spec on the DI--and on the DI when moving (which you really need to be) it is a straight line. The picks up top are from the Humviewer. I've been reading on the SI stuff and making my DI settings the same as what they do on the SI not sure if that is the best but is a place to start. It is pretty sweet. Not sure but I think I have a shot of fish coming up to my bait. Saw something like it on BBC and mine looks alot like it (on 2D)