You were right with the assessment that is was an overnight kit, but I don't see the reason to then turn around and try to turn it into a 72 hour kit. I don't see ANY pocket kit as 72 hour kit- not this, not the PSP, not the BCB tin, or anyone's home build. Overnight, and then go from there, but that is becuase the tools are the same- the difference is in the consumables. The lack of the aluminum foil isn't as minor as the lack of the sewing needle, but it is a quibble given the role of this kit.
Personally, I don't think they needed the fishing kit in it, but I explain my theory as to why it is there in another post in this thread.
I think that I need to expand my remarks slightly.
As a general rule: You hope for rescue within 24 hrs. You expect rescue within 72 hrs. You pray that you ain't still waiting for rescue after 72 hrs.
Because if you are, the possibility arises that either:
A) They cannot find you.
B) They are looking in the wrong place.
C) They cannot get to you.
D) The search has been called off.
In short you are MPD. That's Missing, Presumed Dead.
That means that Momma's little boy or girl is going to have to SR (Self Rescue) themselves.
You need Water, Warmth, Shelter. In no particular order. Which ever one you want first becomes number one. Those three should be shown on every survival kit. In a format similar to the one used for the Heat-Oxygen-fuel triangle used to explain fire and how to fight it.
Food, as most of you know is a much lower priority in Desert and Temperate environments. Arctic environments are a different matter.
However, if it goes to a SR situation, the fishing kit along with whatever else you have had the foresight to add could very well make the difference between life and death.
Most of us take it as a given that you have to enhance any commercial kit.
For example: My RSK has been moved to a tin. I have added more wire (for snares). 24 more hooks, A lure and quite a lot more line. Plus MP-1 tablet, Water carrier etc.
OK, having said all that:
The Solo is is a good buy for anyone who wants to add the excellent mirror, whistle, Tinder-Quick and Heat sheet to equipment that they already have. Or as a strap on kit for a life vest, parachute etc.
I simply think that the Solo needs to be either enhanced slightly at manufacture or the the information on the package needs a "We suggest that you add the following to this kit: Knife, Tin foil (15"x15"), Bottle of purification tablets, A water carrier of 0.5 to 1 litre capacity."
For that purpose, provided that there is sufficient spare room in the pouch for supplemental equipment, it is an excellent buy at a fair price.
One thing that I do think is irresponsible, BUT IS NOT American Medicals doing is the suggestion on one of the links that this is an up to 7 days kit.