I just split a 12 across Poplar log about 6 foot long in half and debarked it. I rounded a notch in the top half so it would lay up against a post and that's all was to it. I drape the hide over the top and that holds it in place while I work the lower 2/3 , then flip it over and do the last 1/3. As far as brains or eggs, Eggs repulse me more.
I get the brains mixed like I want and then bring to a low slow boil just for a minute to maybe kill any bad things in it
and then go at it. Smells like a broth cooking.
Makes your hands soft and smooth to boot.
Lots of ways to get the job done and you seem to be doing just fine, I for sure ant telling you how to do it, just how I do it. :)Like building bows, lots of ways to get to the end product and that is really all that matters.
Pappy