The method I found is the "Double Folded, Loosely Rolled, and Frayed" method. The first one worked well - first few draws had huge throat hit, but little vapor. After a few draws it was producing great vapor and throat hit.
I think it lasted longer than the standard poly fill, but when the vapor and TH diminish, the cart looks to have plenty of juice still. I'm curious why there still is a good amount of juice with little vapor and hit. I'm sure it will just take a little tweaking when making the carts.