Some tips from down here - those big a$$ nails (60d - 6"+ length) are well worth carrying in the field.
I've used them as fire irons, using them to support a small cup of water for cup-of-soup.
Driven into ground, they allow a small skillet to be supported over the fire.
Driven lengthwise through the long end of a potato, they cook the inside of a potato more efficiently when cooking over a fire, heating inside and outside simultaneously. No more raw interior / roasted exterior. They make even larger 8" - 9" as well, but all I've seen are galvanized - believe they are classified as spikes.
Here’s a good link to them, as well as working weight usage.
Be aware. Be informed. Be prepared.
J.R. Guerra in south TX.