Re: Compression leaks and car seats
If they were only soaked about halfway up, then I would suspect that either the legs were gaping and she flooded it (thus causing the pee to shoot out of the legs) or she simply spilled the milk. I've had compression leaks a few times before and the diaper was always completely soaked, especially with a PUL layer. I feel you, my kids are heavy wetters too. I definetely second the hemp babies doublers. They work great!
Kim; Wife to Ed and Momma to 3 not-so-littles, 1 newborn, and a fur baby.