The tarp works but be careful. If you use it in a field were ducks and geese have been and all of a sudden there is a big black pond the next day, they wont land. They welll circle a few times and leave. Use it on a frozen river or lake. Some where that they fly over from food to roost. It is a magnet. Make a ton of noise to. Call like crazy and the'll flip upside down to get in. Also if you what a laugh, let them land. They slide into everything. We had one take out about 4 deks last winter.
One piece of gear. 3D deks. Makes a huge difference. Try hunting with shells on no snow and then with 3D GHG. Your odds will improve 100%. That comes straight from trial and error. There worth every penny.