I just purchased the Remington 11-87 sportsman 20 gauge. I worked perfectly all weekend. It fits perfect for me. I would totally recommend this shotgun.
I have a mod 31 in a 16 and I still take it dove hunting 2 or 3 times a year. Very old gun, but its as smooth as butter. The barrel is choked IC. Dove killing machine!
I made some just have to put them out. ducks unlimited has plans on there site i believe. i think the main part people forget is to cut grooves or put a mesh or wire screen of some time on the inside so the ducklings can get out. besides that not hard to make.
I own a 12 ga CZ Canvasback, which is exactly the same gun as the Wingshooter/Redhead except for cosmetics and the addition of ejectors on the WS/RH vs extractors on the CB. That said, here's a real-world long term reliability test that is on-going. No need to read the entire thread - it's long...