Short Story,
Friend of mine had a small grape vineyard.The deer ate 75%+ of his grapes every year.He finally ran a cable down one side of vineyard. At night he would chain dogs to cable run along outside edge of vineyard.It worked very well and his harvest/yield went way up.Problem is he only ran it on one side of vineyard.The deer eventualy got smart and simply walked to opposite side just out of range of dogs and pigged out on available grapes! Don' t know why he didn' t make a dog run on both sides??

Anyway - he called me to hunt the problem away.I gladly obliged him,and took out every doe I could shoot.

No matter what you do,there will be a few deer that will sooner or later come in and eat everything you got. Thin them out with hunting is only sure fire solution.