Back when I switched from a recurve to a compound, the shortest draw available in a hunting weight bow was 28".
So I shot 28". Everybody shot that or longer.
I'm now down to a 26.5" bow. It's still probably too long but it's comfortable to me. (old dog/new tricks kind of thing) My form is and always has been awful, so I definitely don't recommend shooting the wrong sized equipment.
On the other hand, form isn't what kills deer.