The only one that really seems to contain the runny nb bf poo for our little chunky-thighed super-soaker boy is the "jelly roll". It was also the only one I could ever seem to remember those first few weeks, lol. I didn't exactly "roll" the sides, though, I more folded them in twice, over each other, and after I snappi'd it, I tucked the legs in wherever they didn't seem tight enough on the thighs. Sounds more complicated than it is. I just discovered that you can trifold them and not snappi when using Bummis or ImseVimse, but it certainly does seem to result in more leakage onto the covers, so I think I'll let DH do that (so he doesn't complain about not being able to do it right), and I'll continue to roll the legs.
Happy Diapering!