I bank fish a lot, and I carry everything I need to document a fish. First and foremost for me are 2 things. Minimize the time the fish is out of the water, and prevent as best I can that the fish is not exposed to ground contact. I carry a fish grip, scale, and ruler and smart phone. I pretty much have it down to about a minute, where a nice fish is measured, weighed if there 6lb plus, and pic taken. Return the fish to the water, pick up my stuff and continue fishing. Here's an example. Note: The fish does not touch the ground when its placed on a bps ruler. Lastly... lol that's not a 6lb fish.