On design number 2, where is bar-buoy, and where is beer cooler fastened?
If all of the good names have been used up on prior pattents, might I suggest "The Dumb Duck Blind". With it, do you use a gun, slingshot, or dipnet? Or none at all.
Is it legal in your state to swim up under the ducks, gator style, and pull them down by the feet? Snorkel style hunt.