SCAVENGE skill!
higher the skill = you hide your items like keys or caps or small items in general from looters (body would have to stay for few ore minutes after resp)
higher the skill the more items you find in containers and on bodies
seems ok?
to balance it i would suggest the skill to look like this:
less loot than 100% > 200% skill
200% = 100% of loot that the guy carried
300% = 20% extra loot (ammo and monies mb something else)
might be merged to use on cave hunts and box farms?