We're off from feeder fodder a bit...but I plant iron and clay peas. Four acres of them. The peas get about 5 inches tall and the deer get on them like kids in an ice cream store. In 48 hours, as you said, they are GONE. Not even Army Worms are as fast at clearing the fields as are the deer when the peas come up.
Once, only once, have I seen my fields with peas over 15 inches in height. That was before they knew they liked them so well. Now, I plant sorghum, wild game food (WGF) sorghum that is. Not the grain sorghum. Tried that and got 9' tall stalks so thick you thought you were in the Afircan Jungle.
And I plant wheat, oats, and rye. Makes the fields look so nice to hunt over. Green like big lawns. The deer ignore it. Now that everything is dead from the Central Florida freezes, they are coming to eat the only green there is in the woods.