You idiots didn't even read this book. Rulli states clearly that she tried to hoist herself out of the water (with no assistance or ladder>QUOTE) and that it wasn't that difficult, and that she didn't feel the "dead-water" weight of the jacket until out of the water completely, at which point she took it off and weighed it immediately and it weighed 15 lbs.
READ THE BOOK before you keep changing everything to fit your stupid fantasies about Jonathan Hart. READ THE BOOK. Everything you claim Rulli didn't do, she DID DO: AND IT'S IN THE BOOK.
Rulli's says she only wanted to prove that Natalie could've survived for plenty of time for help to have saved her, but her husband wouldn't. He DIDN'T WANT TO SAVE HER!
FYI: Rulli then tells IN THE BOOK about what happens when she got back into the water after weighing the jacket. TRY READING ALL ABOUT IT!