"Must have" tackle for Milwaukee harbor....suggestions?
Bring a hook hone/sharpener, lots of rocks and mussels to roll the hook tip, and with the hardness of a Chinook's mouth, you need to check often to make sure they stay sharp.
Any reel you have should be able to hold a good amount of line, full spools...and quality line as well. They are capable of very long, repeated runs that will test your drag system, if its not perfect, they will likely break you off very quickly. There's no fish in the state that can maintain long sustained, REPEATED runs, like a Chinook will...none!
If you are using braid, make sure you have leader material, 10-14lb, preferable fluoro.
If you don't have long rods made for this type of fishing (which help immensely), bring rods that are not too stiff. I see a lot of newcomers to Chinook fishing trying to use flippin' sticks because they are the longest rod they have. A rod with a good bend is far more important. Before I had my species specific rods, my best rod for LM was a 6'6" jerkbait rod that had a moderate action. The bigger the bend the rod is capable of, the better to keep them buttoned up. Too stiff of a rod and these fast fish can take that bend out in an instant, and the next thing you know you they got that touch of slack and are off the hook.