No you cant control your neighbors but you might try and explain to them that they would have more trophies if they would shoot only mature bucks and more does. I have heard 2-1 is a good ratio but that sounds almost impossible we strive for 5 or 6 to 1 but even that is hard and we are allowed to take up to 4 does each year which we almost always do. Just keep doing what you are doing and maybe try to attract some of those small bucks to your area and let them grow.