I had the same problem, and I have chosen this year to not hunt if the wind is not perfect... He's not coming in if he smells you, and he may avoid the area... I have 2 nice locations that I have not been able to hunt for this reason, and I went out last weekend and found 3 more spots for different wind by looking at an Ariel Photo... So my suggestion would be to look for some other areas on your 160 acres that you can hunt different winds for...You'll never get it perfect it, but you want it blowing in the least likely direction the deer will be coming from...

Good Luck...