I am sorry to upset you but I must ask what you think he should have gotten if he was actually guilty? I know you truly believe he is innocent. I don't want to push this - I appreciate that you know him and believe in him and if you are right the point is moot. However, if your are wrong then 25 years seems like getting off easy no matter what your age.
If he was proven guilty beyond a reasonable doubt which he wasn't, then what he got was all he could have gotten the max, life. The 25 years is how long before he's eligible for parole, he can apply then, doesn't mean he'll get paroled. Prison ages people fast look it up. He will not make 25 years as I stated before. He'll die long before that, there are only old looking people in prison not really old people, they just don't last. Money is what drove this, Shelly's parents are wealthy, they used that wealth to make the only person they could, pay for their daughters death. If Dave had the same resources he'd be a freeman today. Money talks especially on small island territories. I've had friends that have run afoul of the law and I hold no sympathy for them. They were proven guilty with hard tangiable undeinable evidence.
In this case there wasn't even an autopsy. Shelly could have had any number of medical episodes that may have led to her death, but we'll never know. Her gear was not confinscated by the police and held for 10 years before the trial. Serving life because of the way a pair of fins falls seems less than reasonable to me. Especially when many other reasons for her death were not eliminated.
Why would someone diving in clear water bring others on the dive with them if the intentions were to murder? Does a murderer want possible witnesses to the crime? Why wasn't an autopsy done? Why wasn't Shelly's gear held as evidence? Why after being ruled an accident for 10 years did it turn into a crime after the civil suit? Civil suits and criminal cases have little in common. Why didn't the US charge him? This is allowable under treaty if a US citizen kills another US citizen abroad the US reserves the right to charge and try the person. Too many ?????.
If I ever dive outside the USA again it'll be solo for sure.