It looks to me as if many of the hooks used in Classic Salmon Flies: History and Patterns by Mikael Frodin, are tied on these hooks
Ive reviewed the following helmets on how they look and feel, and havent crash tested them, though they all meet UK helmet safety standards, of course
These baits have proven to get the attention of some big mamas

Made with lightweight material Breathable, padded back panel Padded, fleece-lined laptop compartment Main zippered compartment has plenty of space for your work or travel items and has a secure-zip mesh pocket with a key hook for organization Secure-zip top-lid pocket provides useful organization with a sleeve pocket, mesh pen slots and a fleece-lined pocket for your phone or sunglasses Two water bottle pockets Side compression straps to adjust the volume Load lifters at shoulder straps to adjust the weight distribution Durable, coated face fabric for a sleek look and durability against the elements Adjustable sternum strap Top grab handle 360-degree reflectivity Main body: 300D Recycled Polyester with TPU laminate Boot: 400D Recycled Nylon with PU coating Features Made with lightweight material Breathable, padded back panel Padded, fleece-lined laptop compartment Main zippered compartment has plenty of space for your work or travel items and has a secure-zip mesh pocket with a key hook for organization Secure-zip top-lid pocket provides useful organization with a sleeve pocket, mesh pen slots and a fleece-lined pocket for your phone or sunglasses Two water bottle pockets Side compression straps to adjust the volume Load lifters at shoulder straps to adjust the weight distribution Durable, coated face fabric for a sleek look and durability against the elements Adjustable sternum strap Top grab handle 360-degree reflectivity Materials Main body: 300D Recycled Polyester with TPU laminate Boot: 400D Recycled Nylon with PU coating Responsible Collection Recycled Fabrics The Kaban LTE is an updated take on our beloved and durable Kaban pack, but with a lighter design, enhanced internal organization and a sleek, modern, minimalistic design

There is no real cohesion between the vents to create airflow from the front to the rear, so if pushing on a bit I actually found some aero helmets cooler