There are some basic advantages in techiniques that can make learning to aim a bow and arrow easier than others but as an archer you need to ultimately choose what works best with your goals, abilities and personality.
If you're gonna learn an aiming techinique for bowhunting besides aiming Instinctively the closer you can get your point on to 20 or 30 yrds. the easier it is to reference your arrow tip in most hunting situations if you're gonna use your arrow tip as a visual reference.
With some people...like myself...getting a Point On that close would also require shooting a low weight bow with a heavy slow arrow...which is something I wouldn't recommend for hunting...so you might have to accept that your Point On maybe 40 or 50yrds...which is still better for hunting circumstances than 70 or 90yrds.
You can do that a number of ways. One is to shoot 3 Under as oppossed to Split Finger. Another is to raise your anchor point and in most cases an archer will have to do both to get that Point On to closer distance.
Learning to aim with Gap Aiming is easier to master than learning to aim Instinctively. It should only take a couple of shots to know what your gap is for a specific distance whereas aiming Instinctively can take 100's to 1000's of shots to engrain the correct sight picture and bow arm position into your muscle memory and subconscious for a specific distance.
Instinctive Aiming has it's advantages in most hunting citcumstances where the archer doesn't have time to think about distance and their gap such as shooting at moving targets or when an animal appears out of no where and the shot needs to be taken in a matter of seconds. So if you are also wanting an aiming techinique where you're not consciously analizing the situation and you just want to keep it simple by just picking a spot to focus on to point and shoot at...Instinctive Aiming will most likely be the better choice.
Gap shooting can also be very effective in many hunting circumstances. I can vouche for that
Based on my own personal experience with Gap Aiming, Gap Aiming has nearly become totally Instinctive to me to the point where I feel my gaps rather than analize exactly what they are. My mind knows it when it sees it but I couldn't tell anyone exactly what they are for a specific distance but I'm still consciously aware of them.
If you are gonna primarily or only be a bowhunter I would suggest learning Instinctive Aiming if you have the time and skills to dedicate yourself to mastering it.
If you want to bowhunt and compete in archery tournaments, I would suggest learning Gap Aiming.
Whatever aiming techinique you choose, you're still gonna need to take time, dedication and perseverence to master it. It's just that some aiming techiniques are easier to learn to become more accurate and consistant with than some of the other aiming techiniques....especially at longer distances.
Ray