Continuing my look at travel rules (or at least the rules in the Travel chapter): you can only have one character forage/scrounge/hunt in one hex at one time. Other characters must march off to another hex entirely, or simply help the roll.
When foraging (for example), one ration is found for each success. At best a player can roll two dice for two successes. So if you have a party of three or more, you need to have at least one character travelling to an adjacent hex to forage, because the third person's help really isn't helping him at all.
But these are 10 km hexes! Your hex is 100 sq km. The rules need a more practical limit on how heavily you can forage/scrounge/hunt etc. a hex before exhausting it. One aspect of these rules that is very very good imo is that the PCs start the game in poverty: a few rats, a little ammo and water, and no way to keep whatever vehicles they have running for long. Great! But should a 10 km hex really be so small that only one person can search it? It makes sense to say that foragers, scroungers, and so on have to split up, but not to the extent of making them march all morning just to get away from each other.