You’re correct about digging the Dakota Pit. Like all things local conditions dictate what and how you do things. Even the H Fire has local conditional limitations. If the soil is loose, loamy or sandy and dry it won’t fold back without disintegrating. That’s why the tarp is so great to have. Pull back all the surface covering away from the site. Dig a shallow hole for the fire, placing all the dirt on the tarp. When leaving dump the dirt in the fire pit and recover the hole with the original leaf covering.
I just want to say none of these methods will hide your other activity moving around the camp and collecting burn materials. That requires a lot of practice and concentration while you’re in the act. Don’t cut anything, and don’t break any green branches or plants. If you can collect your fire starting materials while walking in you will disturb less around your stopping spot.