I just happened to have several scenarios I used to test sonar performance in bad acoustic conditions set in the Persian Gulf using a sand bottom.
I picked up a fishing boat on the kilo hull array going 10kts at 4.3 nm. Pretty bad, but bad within specs.
Cheers,
David
PS Also, in 1.03 the acoustic model simulates bottom bounce and other things not seen at all in 1.01. It took some time for us skeptical old timers to buy into the 1.03 model, but its really good. Even a SW with a TB-29 won't see a fishing boat or even torpedo up close if it is under a layer in 1.03, depending on the particulars of the situation.