Installed this last night (just the el-cheapo Elite 5x DSi) to see how it would go locally, despite looking very cheaply made, it performed well. I was under the impression these we're moreso for finding structure and NOT fish, but it showed fish very well, especially Tarakihi which really surprised me.
Here is a Wellington harbour wreck called the South Sea, it's a minesweeper than was rammed by the interisland ferry in 1942 and is intact apart from the superstructure which was removed during salvage atempts - you can clearly make out the hull. and where she's lying.
The South Sea:
Bow below, lying on it's side - loads of sediment to the hull sides.
The stern section from above.
The complete boat, shows alongside a traditional 2D sonar which shows little info on what it is.
Bait schooling over the rear of the hull. You can see how much sediment and debris has built up to the sides here due to tidal effects.
This is a kelp forest, amazing detail of individual stems and bases.
This is schooling Tarakihi.
The results from above!...
Great wee bit of kit and works very well next to traditional sonar, it showed fish more as actual size dots and lines not so much arches, also picked up thermoclines really well. Can't wait to get out and play with it again!