My DS is another super wetter and we've been fiddling around with a few combinations for nights for the last couple of weeks. What works best for us is Wombots SNAIO, unfortunately their offline at the moment due to a family tragedy so you'd have to try to snag one secondhand, they're really trim (for a night nappy anyway ) but do the job. For us the GNST's in hemp didn't work, I just got 2 bamboo GNST's in the mail today so I'm trying that out tonight with a Bubblebubs felted wool cover, downside of the GNST's is they're quite bulky. I've also used a medium BB (Ds is in smalls the rest of the time) boosted in the front with a prefold pad folded then folded in half again which also works.

I think with any cloth nappy iot's all a matter of trial and error, it depends so much on your bubs body shape and peeing habits as to what will work for them. Can get very expensive though!