...what can I do to build a better herd and grow larger deer. The cows run through most anything I've put out for the deer and the fella working the cows isnt really into helping me with the deer herd...
I've hammered out a hardscrabble QDM program on a small property for 8 years now and I can tell you that "growing large deer" on your place is really not possible without a high fence. A deer is going to spend a lot of time on other properties. Unless you have a solid agreement with the neighbors and a way to ward off poachers, you cannot even begin to look at the deer herd as something you can regulate. Now this is not to say that you cannot help to create conditions in which a deer has better odds of growing to maturity. You can, but it is a slow process in which you have to accept your limitations.
The key is to make your property as attractive as possible. Having an arrangement of food, water and cover is a start. If you're missing any of those things I would work to put them in place. Diversity is also great. Multiple food sources and multiple areas of escape/bedding cover are a good thing if you can build them. These elements may encourage deer to spend more of their time on your place, thus decreasing the chance that they will walk in front of hunters with different standards. Another thing you may find helpful is to establish sanctuary areas and adopt a low impact style of hunting. Given that you lease an active farm, that may not be easy but you can try. Finally, I suggest you pay very close attention to your doe herd and hunt it accordingly. Given what you indicated in your first post, it seems as if you may need to thin your doe herd in order to lower the overall stress level. Once you have brought it down a bit, I would skim it carefully and try to keep one or two mature does on the place. I believe that matriarchal does have a stabilizing effect on the herd and will consistently attract mature bucks.
Let me know if any of that makes sense.