RE: 100 GOOD QUESTIONS THAT WILL TAKE ALOT OF THOUGHT (2cd question)
Antlers are not a reliable indication of age. they can indicate genetics and range condition.
Where I hunt, a decent 1 1/2 year old has eight points. You ALWAYS let these walk, because he has the genetics to have a nice rack by the time he is 3 1/2. OTOH, if he has six points, or no brow tines, he is a cull that is whacked from the herd.
All the antler development magic potions in the world won't do a thing unless they are used at the proper time...protein of some type during active antler growth. My area, March thru June/July.