Howdy. We have used SS3D on two of our boats over the past 2 years or so in the heads of Port Phillip bay... which sits between 20-45mt. havnt been any deeper than 45 with ss3d. we found it struggled somewhat without a few tweaks
its........not bad.......not great. To be truthful, the extra detail boost the standard side and down scan sonar receives in two dimensions would benefit you more than the 3d perspective.