Art and others nailed with longer bbl for pass shooting. Practice at range advisable. Don't look up or smile, ducks have great eyesight (Art's mention of beacon). I still use wool and wax cotton...paid for , wool is warm even when wet (plus you smell like one of the dogs), wax cotton can be re-sewn if torn.
I'd check with persons at a range, or sporting goods store.Hunts for fee posted...hint for an invite, relatives, if single find "that" girl whom daddy's has a place to hunt for free ( whatta you care-your wanting to hunt, not court and spark
)Borrow waders and the like to see how it goes. Cheap wool pants under waders, above waist dress in layers...walking in take some layers off...you'll get too warm, when you stop with sweat it gets cold fast. Check Army/Navy stores for inexpensive wool pants and tops. I use silk underwear and silk 1st pair of socks...wicks moisture away, and is thin. I f real cold can use the new fangled insulate. Always Always wear a wicking type sock first then the 2nd pair, be it hunting boots , or waders. Feet sweat stick, rubbing = blisters. First sock even with waders will help.
A sling is good while walking/wading in...remove for shooting ...gets in the way, and the pendulum effect screws with shooting. Let others do the calling, just listen and learn for a bit. Notes zones of fire, and where expended hulls eject [ hint: two men in a blind-get to his left
] Gotta have coffee so you can learn to relieve yourself in waders. [truism: this is when ducks will come in...always
] Actually soup/broth is better...and jerky. Oh flashlight...mini -mag is perfect.
When you set to shoot forget about anything but the head...focus on the head, swing through and then some more...better to miss in front...than back.
HTH
..."bird, belly, beak, boom"...