I sight in off a bench. Most all 99% of my shots are taken from a rest weather it be a tree, my knees or a brace off my treestand, I want a good solid rest when I take the shot so I know Im going to be on where Im aiming.
Now if Im sneaking and peaking through the woods and spy a deer and cant get a rest I will shoot offhand out to say 60yds, but I will try and get a solid rest befor I do any off hand shots. If the wind is blowing and I cant get a solid rest I pass on the shot. It's a personal thing and I like seeing a dead solid lung or heart shot on all the deer I shoot.
(BP)