The Fishpond Thunderhead Sling is a functional, high-quality, and waterproof option that has plenty of fishing-oriented features to increase ease-of-use, like attachment points, a fly patch, and a slot for a small net. If you don’t mind sacrificing storage space for a comfortable sling, this could be a good choice.
The Patagonia Stormfront 20L Sling Backpack is a durable, functional, and 100% waterproof option that is well-suited for fishermen who want a bag that is convenient and can stay out of the way while casting. Despite being expensive and lacking some internal organizational pockets, this bag can keep all of your gear dry in any weather conditions. This could be a good choice for fishermen who want an extremely durable and weather-protective pack, regardless of the price.
The Patagonia Stealth Hip Pack is a great option for anglers and fishermen who want ample storage, comfort, and various compartments for organizing all of the fishing supplies needed for a day out. The lack of a waterproof pocket may deter some, but the high number of compartments and padding make this a functional and well-designed option for any level of fisherman.
The Patagonia Stealth Atom Sling is a functional, versatile, and adjustable fly fishing sling pack. The plethora of storage options and strap-adjustments makes this a top choice in terms of portable storage.