boog21: that's a problem and I haven't figured out a solution. The old secondary aiming point method can work when you or your subconscious mind is picking out a spot on the ground between you and the target, but it's not so effective when you're beyond point-on distance and have to focus on a piece of blue sky! Long downhill shots do offer a background that works for secondary aiming, though.
It's fun to take extra long shots and watch the arrow's trajectory, but I don't think that's constructive practice. I don't think constructive practice can happen much beyond your point-on distance(Unless you use a sight and which of us would do that?) My best performing bows, with the typical arrows I use will have a point-on at 55-60 yards. But, usually it's less than that. With both eyes open, the target is not blocked by your bow hand until you are a bit beyond this range, so whatever range that is becomes the limit.
These are only my thoughts on it. I don't consciously use secondary aiming during any normal shot, but if I'm going to get any benefit from it at all, the old brain has to have something consistent to go on. If you're gonna just pull back and fling 'em, it's gonna take a really long time to get any consistency!
Beginning to see the range where I can be totally instinctive stretch, though. Training the subconscious mind, I guess. Doesn't mean long hunting shots are necessarily in my future. Howard Hill supposedly shot hundreds of shots every day.....if we believe the stories, he was awfully good at long range!