I've found the wiping them down with Johnson's paste wax heavy coat and don't buff it off works also CRC Marine HD Corrosion Inhibitor works well(spray it on the night before and let dry overnight)it leaves kind of a dry gummy residue but protects well, it is also great for trailer light plugs, the trolling motor and running light sockets.
As far as the sixes, I only use 7/8 oz in the 12ga so I tend to let them get in High House station 7 range. I'm retired and get to hunt a lot so I can let them come in or just watch them go bye no need to try and reach out for them. I also live walking distance to some great hunting here on the coast and have cart set up to walk my decoys to the spot, just sit on the bank on the in coming tide no blind.
Over the past 60 yrs of duck hunting I've acquired enough different boats that I can get into spots a lot of other people won't bother with.
