could plant lots of marigolds, unless the deer are really hungry they may leave it alone since they apprently dont like the smell.
I also have an incredible amount of deer, some that seem to live in my neighbors backyard (I think she feeds them), my backyard is where I grow most of my veg and it's got a big fence so I'm good there, but the front yard just gets decimated by deer. I've been trying to grow garlic up against because apparently deer dont like them but nope, chomped them down. I'm planting a few hundred marigolds to hopefully make a smelly fence the deer don't like... I'm not that hopeful tbh...