Nice experiments and thanks for sharing!
It would be interesting if you could guesstimate (unless you have it written down), the skill/hour count too for the different tools also.
Just skill gained in the sessions / time used.
I know this is an eco test, but with your data, if you know how much time you spend, you could show that too, it would be interesting as a comparison
I believe the most eco way to gain first aid is fapping while hunting, transfer some of the armor decay cost to fap cost instead, and get skill for it.
But I havn't really tried to calculate it