We all know there is only one thing that will "prove" the SeaSearcher technology – the announcement of treasure found by the SeaSearcher.
No one is going to provide stats or anything else that will convince anyone that refuses to be convinced. Any attempt to do otherwise will be a lost cause.
And I doubt they will be providing many details about the functionality of the SeaSearcher in the future or ever. The only proof that matters will be that it has found treasure, and then, that it is able to repeat that process again and again.
I think the first announcement will be huge but when they prove it again, even bigger.
BTW, did you sign an NDA when you met with them?