I can vouch for what Selkie says on the rolling - I do that with my Swimtails Betta's vynil inserts, and it works like a charm. Sure you have to fuss with the fabric a little to get the right tip unrolled flush into the right corner afterwards, but it's so much less intensive than trying to inch it out bit by bit, and inching it back in all the while hoping to not hear the dreaded seam popping. It's also faster too. I can take the insert out in about twenty seconds for post-swim washdown and drying, and about five to ten minutes sliding it back in and tucking everything into place.