Hello! It's been 8 years since my youngest son was in diapers. Back then I used prefolds and Polar Babies fleece diaper covers. I will definitely be using prefolds again, as the local diaper service deals exclusively in prefolds. I am interested in trying to strictly use wool this time. I've never used wool before and my question is this: Can I pull a wool soaker directly over a prefold or is there another layer that I am missing? I know there are wool snap-on covers but I am drawn to the pull-on sort. I understand I will need to use pins or a snappy but can I get by with just the prefolds and soakers? Thank you for any advice.