I'm with Dunster. Rolling is always harder for me. It seems to turn into a heavy log I just can't move. I puddle, accordion pleat, scrunch or whatever ever it takes. I have heard some people really like clamps. I also know one lady that rolls and then puts safety pins down roll to hold it.
Listen to everyone's suggestions and then try out a couple that you like the sounds of. Who knows what new thing you might discover that works for you?