Here's a picture of the beast that we use. It's a custom designed and built by a guy out of California. All the specs on it surpass anything comparable to it out there.
Tell me about your SSS. What is the frequency, single or dual, coax towcable or multi conductor tow cable. Electronics in the towfish or just transducers? What software are using topside for display and aquisition. Can you post a sample image. I like to keep up on all SSS systems in the field. The fish looks well made.