Slightly off topic I know, but I think the person whose friend was nearly drowned in the BHL S-61N has gots his facts slightly wrong. I believe that the reason that the aircraft ditched was because the pilot flying did not trust the wonderful 4-axis autopilot and was trying to hover on calm water at night in hazy conditions. Perhaps if that pilot had used the kit, the aircraft would not have ditched.
It's funny, but the RAF Sea King that picked up the crew used its' auto-hover without any problems and rescued the S-61 crew.