The extra fatty pipes work pretty well IMO. There are a couple of things you need to worry about. If you have any small holes or tears before freezing, this will become a huge hole and you will end up throwing the pipe away. The other is the inside convergence cone. If that thing becomes detatched or if it moves greatly, again, you might was well throw the pipe away. I have gotten away with freezing pipes many times and overall, I would recommend it to anybody.
There is one tip I got from a machinist friend. Make a steel plugs the same diameters as the pipe openings and use that to plug the ends. In the stinger end I use an old slightly bent suspension pivot ball. The reason is that by using these pieces of steel the water will freeze faster around the openings concentrating more expansion inside the pipe for expanding and popping out dents.