Don't be fooled. You don't need thousands of acres to be able to grow bigger deer. What you need is a good mix of nutrition, browse and bedding on the acreage you do have. It helps if neighbors are on the same game management plan as you to see the bucks get to their prime but even if not, you still have an impact on the local herd and as you said it gives you a better chance that one of those bucks will be in front of you during the season.
I understand big bucks can consistently be grown on small acreage - but it has to be the right small acreage. But, the north side of my acreage is bordered by multiple small acreage - 10/20 acre - properties. Most have a corn feeder set up within 25 yards of my property line. Historically, over 80% of the 4.5 yr old bucks are killed that I have pictures of. While the hunters on my place pass a lot of legal deer - we have no real expectation that they will make it another year. Deer densities in my area are about 20 deer psm on average. I have found I will have a much greater density of bucks and larger bucks in direct relationship to how many deer I can attract as opposed to raise and produce them on my own land. I have about a deer per ten acres that use my land - sixty deer - with 1/3 of them bucks. No way could my land produce 20 bucks. It is a rare buck that I have a year to year picture history. Of the four bucks I have on camera that I consider mature “Shooter” bucks - I cant match any of them with last years pictures. Two of the bucks have been killed that I know of - one has been a no show after the first week of gun season, and the one I know is left is a wall mount waiting to happen. I know for a fact he is ranging over three miles. I know four other hunters who have him on camera. It would surprise me if he is still alive by the end of gun season. My 3.5 year old bucks have been thinned as well. I will recruit a new crop next year.