Thought we'd cracked it with a size 2 Fluffle boosted with a prefold but the past two nights it's leaked. Could of course be me doing something wrong but I checked this morning and there was literally a single tendril of Fluffle sticking out so I think the problem is more that it's satuated. Maybe need something more absorbent than a prefold? Or just go back to disposables (though no guarantees of not leaking there)?
Would a wool/fleece wrap help? Though I can't really get my head around them being waterproof overnight ...