Colombo
I have 50# of iodized salt per person put away which I do not think is enough.
Salt has so many uses. You mentioned a few, "meat preservation, trading, deer/shrimp bait..." Salt also has medical uses like, sore throats, toothaches, postnasal drip, bee stings, mosquito bites, painful gums, poison ivy, and poison oak are some of the ailments for which salt has been prescribed.
I added 25#'s per person of baking soda, which has many uses other than baking like, cleaning, antacid, deodorant, tooth paste, remove odors to name a few.
PLUS, I have 6 gallons of apple cider vinegar and 6 gallons (12 total per person) of white distilled vinegar per person. The obvious is cooking but you can use it for, pickling, stomach aces, cleaning, clean rust from tools and bolts to name a few.
Thanks for bringing it up Colombo!