Tip: I always let my bread rise in the oven. It is the perfect "warm and draft-free" place! To do this, I turn my oven on for 3-5 minutes, or just until the oven air feels slightly warmer than room air. Turn the oven off (this is important, or you will bake your dough!) and place your covered dough in the oven to rise for the designated amount of time.
If you are having trouble getting your dough to roll out into 28 inch ropes, the dough probably needs to rest. Roll the ropes out partially, then let them sit for about 5 minutes and try again. They should extend in length much more easily after a short rest.
It is important to roll your ropes to the full 28 inches prior to braiding, or you may have difficulty tying the braid into a knot.