Good catches Tim, great shots of the cooler's!! I have one of those Engel Live Bait Coolers on order. Better work well for the cost of them but if they do it will pay for itself quickly. In the boat it isn't hard to keep the minnows alive but when using the kayak room is key and the Engel Tank should fit nice behind me seat. Like you I do try to add ice when needed.
Congrats on your three days.