If you've never seen production roof cutting (gang cutting) please check out Will Holladay's website http://theroofcutter.blogspot.com/. I read Will's book as soon as it came out and was blown away by his techniques for increasing production. With some practice this gets fast and is very accurate. If you decide to try gang cutting, use a good sharp chisel tooth chain and the Headcutter from Big Foot Tools (http://www.bigfootsaws.com/bigfootpro.... The 2 most common knee jerk responses to this are: 1) Chainsaws aren't accurate enough. This is totally false. My rebuttal is cut a batch of rafters 1 at a time and then rack them and notice the differences. 2) It takes longer to set up than to just cut 1 at a time. ""False""-Dwight Shrute As you can see the rafters only get handled to rack them, and even cutting the tails and stacking them off to the side is faster than handling a pattern and marking that pattern times the number of rafters. The more rafters you need to cut, the more time is saved. Production comes from economy of movement and sometimes speed of movement. Thanks for watching. Please remember, I’m not showing the best way of doing something, just what works well for us.