Hmmm... This makes me think also about optics (physical principles not scopes

)
Basicaly, the human eye got a certain tolerance for near/far sight (somehow related to a photo lens). To aim with a sight closer to the target is better for your focus so you may feel like it's somehow sharper or clearer. Tho i don't realy know how much diference this will do on anyone with draw >28" it certainly helps short drawers. Still, keep in mind, there is no good or wrong here as all this things depend on your own feel and confortability. The tradeoff could be more critical as your "shaky" aim becomes "shakier"

...
All that said, I suppose try/error procedure will get you the idea

.