Ya gotta be a good shot and really know deer anatomy well to shoot from 30 feet.I took my 1st saddle buck from 30'. Height will let you get away with some stuff, but it's not the end all be all.
Those kinds of heights get pretty critical of shot placement. Especially if the trail runs close to the tree. Single lung hits become more common.
I'm not saying another guy shouldn't hunt that high, but for me shooting trad gear, 30 feet is not a good idea. Unless its a steep hillside and the animal is up-slope.