Messer's Westside Bait in Palatka sells minnows by the pound. Very nice people. Recently stayed open after closing hours for us to get there.
386-328-4035. FYI, they will bag them for you in helium (I think) keeps minnows alive over night. Also, Walmart is across the street. Restaurants, Publix in the area.
Georgia Boys is closer. Merry Christmas!