I can understand how you see the situation. I can not understand why the problem.
Hunters have always relied on food sources to find game while hunting. Hunters have always hunted farmers fields. In the not so distant past, corn pickers were used instead of the ever ready and highly efficient combine. Kernels and even whole ears of corn were found all over the place. The knocked over stalks provided cover for foraging small game as well.
From the earliest days of this country, hunters hunted the farm fields for this very reason. A rabbit in the pot was easier to come by this way than going far afield in search of the same game. Same for any other animal coming onto farm land.
Perhaps this long held practice is why the reg is worded to accept normal farming practices for hunting over.
Sec. 2307. Unlawful taking or possession of game or wildlife.
(8) Any artificial or natural bait, hay, grain, fruit, nut, salt, chemical, mineral or other food as an enticement for game or wildlife, regardless of kind and quantity, or take advantage of any such area or food or bait prior to 30 days after the removal of such material and its residue.
Nothing contained in this subsection shall pertain to normal or accepted farming, habitat management practices, oil and gas drilling, mining, forest management activities or other legitimate commercial or industrial practices. Upon discovery of such baited areas, whether prosecution is contemplated or not, the commission may cause a reasonable area surrounding the enticement to be posted against hunting or taking game or wildlife. The posters shall remain for 30 days after complete removal of the bait.
http://www.pgc.state.pa.us/pgc/cwp/view.asp?a=478&q=151077#2308
The reasoning for the broad latitude in what is acceptable is due to commerce. Farmers, and others need the ability to farm, but also for crop damage control. Mostly done through hunting, if normal and accepted farming practices were not authorized for hunters to hunt over, farmers could and would incur huge losses.
So basically, if the crop, food plot, or other stuff has roots - it's legal. In the case of minerals, say a drilling rig uses a fluid, or produces a mineral of interest to animals. A natural by product of the drilling or mining operation. This to is legal to hunt over.
As posted before, a small plot in the middle of the woods is legal. Planting crops dedicated for wildlife is also legal. A likely extension of the need for farmers to have the ability to have hunters perform crop damage hunting for them.
For me, the small, middle of the woods, food plot is a none issue. With food plots, like regular farming, there is no guarantee it will grow. If it does, there is no guarantee that it will have the taste agreeable to critters. The minerals in the ground has a lot to do with crop quality and quantity. There is also no guarantee that there isn't something closer, more plentiful, or tastier for the critter in question at that time of the hunt or season as well.
Even if the stars align just right and the food plot is perfect. There is no guarantee that the critter in season will be on the schedule that takes it to the food plot during legal hunting hours.
Bait has some of the same problems in the guarantee department. But before all that - it is just plain illegal by regulation and law.
In answer to your question about planting all the food plots you mentioned and placing stands over them. Go for it. it is legal. Hope everything lines up for you.
Besides, you will be helping far more animals than just deer. Turkeys, rabbits, song birds and a host of other animals will dine in your offering. They may not eat the actual plant, but may dine on the insects that the plants bring. Some animals may not even eat the plants or insects but the other animals eating them.
A food plot has a life cycle like any other environment. From the minute you turn the soil, you provide nutrients to an animal or another plant that hadn't the food source before. Turning the soil may also allow dormant seed to germinate producing yet another source of food for all critters.
In summation, food plots often provide a very long change in the area long after the original planted crop has come and gone.