Ah, you beat me to it but a very comprehensive tutorial. Here are a few things I do differently
1.Personally I have never found the need to remove the eyes
2. If you use a rolling boil then you add a dishwasher tablet as this will inhibit foaming due to its anti foaming chemicals
3. To do the brain cavity, hold your powerwasher nozzle so as it touches the skull socket and do not remove it until the water runs clear
4. Once again if you use a rolling boil then 25mins max for yearlings and 35mins max for older animals
5. Immerse immediately in a bucket of cold water on removal from boiling
6. When you shoot the animal push your hose into its trachea to flush any blood from the nasal passages as this will stain the nose bones if left in
7. When finished powerwashing immerse again in clean water until your ready to apply the bleach or the skull will begin to dry
8. If you can clean them on a sunny day do, as bleach will work better in the sun
9. For gods sake wear an apron and boots and if you've got a dog let him clean up, he'll love you even more
10. Make sure the missus is out shopping, open the windows and don't (as one member did) clean your head down the local garage powerwash bay