I don't know how similar the 11-87 action is to the 1100's, but we had a few cycling problems with the 1100's when it was extemely wet and cold. We boiled it down to .. rain and snow is ok, but you can't let water splash on them, etc. But, it was only a few times .... probably insignificant.
The duck blind is one place were a heavy gun is welcome, to help with recoil ... if you're hunting coastal. When Browning first came out with their 12ga 3.5" model of their BPS pump gun, it was built on the BPS 10ga frame ..... real heavy gun, and the only gun I use for harsh, windy coastal shooting. Mine has a 24" barrel, but is still as long as a standard gun. They were only built on the 10ga frame for a year or two before they switched to the 12ga frame to save weight and length. When you find a used one, they are usually cheap. And, all BPS's are indestructable.
For cold weather hunting, I have the stock cut down for easier handling with heavy clothes on.
Good luck.