tortoise
Wild Hare
So my advice is aim for does and hang em for a week or two. I'd take a 90 lb doe over a 150lb buck any day
A yearling fawn (well, 2 of them because they're so small) is the best venison we've had! And a doe that hadn't been bred was delicious - insanely fatty! 1" - 2" thick coating of hard fat on her! That was a lot more work to process, but the extra yield of fat for winter chicken supplement was welcome.
DH will harvest a deer with a limp or take out a weak one, more for euthanasia than for herd management. One year he got a doe with an obvious limp. She had a previously broken, poorly healed leg that was shorter than her other legs. Poor thing! Around here, if you use a tag to put an animal out of misery (like one with an infected arrow wound from archery season), DNR takes the animal and gives you a new tag. At least it has been that wasy. Hunting regulations change frequently, seems like every season.
But that aside, if he has a choice, he'll aim for a smaller younger deer.