However you do the next step.......... you need to be as tedious and meticulous as you can be. That hide needs to get as clean and thin as you can get it. The thinner the better. Problem with the cowhides is the thickness of the skin and the type of skin pores as far as I understand. It makes it very difficult for the tanning solutions, natural or chemical, to penetrate everything.
I've tried a big hide once. My elbow grease ran out and it was a pretty piece of haired rawhide.
Stonewall Joe, yes you can buy hides for pretty cheap. Some stink worse then a skunk from the chemicals used and all that.
There just is something about having a hide of one or your own cows/bulls. Call it pride or whatever and if you even tanned it yourself...........bragging rights. =D
P.S.: I have one bull hide in a little freezer since a few years already.......that son of a gun was a pain in the ass and had to be shot and butchered in order to get him to go home from pasture. So doing that hide would be vengeance for being an ass............ if I just had the energy and elbow grease to try again. Hahaha