I use a MagPul DAKA zippered pouch to hold my licenses and permits as well as other ancillary items. I chose yellow for visibility when I’m using a slingpack (Patagonia Stormsurge Sling or Yeti Panga 28L). It just keeps things together and reduces the clutter. The DAKA is not 100% waterproof but it’s durable and does the job.
As stated before, I spend a lot of time researching gear choices. I think things through with a focus on price, durability, utility and function. I prefer a modular approach so I can switch out easily. Anything to maximize my fishing time and keep clutter to a minimum…