mlf, good questions. I can't help but think that whenever and whatever Balak was involved, he screwed up. I think anyone who had any dealings with Balak quickly seen what he was (a con artist)and voided any further contact with him. Like I mentioned before, the technology is proven on a smaller scale, so why not a larger one? Plus that outfit that logman was fortunate to visit with seemed confident.
I'd rather have us throw money at a pipelink prototype than at Sentry. Or at least approach some piping companies like Rooster suggested.