New guy here who has been a troll lurking on this site for months without joining. Felt I should join when I had something productive to contribute. Here it goes.
I can talk from experience. I hunt about a 1200 acre piece with my father, brother, grandfather, and 2 neighbors. We used to shoot any buck we saw and would give each other high fives at each spike buck gut pile. 95% of these deer were 1 year olds. When I say 1 year old, obviously I am referring to a deer that is 1.5 years old at hunting season, same with 2, 3, or 4 year olds. Our wall of antlers was filled with spikes, 3's, 4's, 5's and the occasional 6. We had two 8 pointers and a 9 pointer between 6 guys who were hunting every day for 15 northern tier hunting seasons. None of us starved but we didn't have too many trophy bucks either.
In 2007 we found the thrill of a spike buck was gone and collectively decided to started hunting 2 year olds and up. We had a pretty slow season that year. Our hunting party put one antlered buck on the meat pole, but we filled up our freezers with does. 2008 we killed 2, 8 pointers and a 9 pointer. 2009 we killed four 8 pointers and an 11 pointer that grossed 167". This past season we killed a monster 5 point, four 8 pointers, and a nine pointer. We blew it on a 150+ monster because a cellphone made it to stand and went off at the worst time possible. I passed on an 8 point and 9 point the last day of our late muzzleloader season. We all killed a mature doe as well.
I know from experience that passing on yearling bucks works. I don't hold anything against a guy who kills a spike but I do think the idiot who kills several spikes and crotches each season needs to be dealt with.
On a side note, we have found that most of our yearling dispersal happens around August and September. That is when we notice our little bucks disappear and a whole new group of yearling bucks show up. We also find that these little bucks set up home and are there the following seasons as 6 and 8 pointers. Don't know if it is the same everywhere but that is our experience.
Like the old saying goes, "If you want to kill an 8 pointer you can't kill a 4 poiner."