wow, we use pretty much the exact same thing.
only difference is ours has to legs to hold it up, instead of the
pallets.
we have 2 small cones, and 1 larger cones for roosters.
we put a large tub with
straw underneath to catch all the blood, them compost it. looks like you saved that step.
edit: ours looks sort of like this, but without the gutters and the tub is directly underneath:
http://www.cloud9farms.com/ - Southern Colorado - Zone 5 (-19*f) - 5300ft elevation - 12in rainfall plus irrigation rights
Dairy cows, "hair" sheep, Kune Kune pigs, chickens, guineas and turkeys