ORIGINAL: Roskoe
I have always wondered what the advantage (if any) would be with the helical over a pretty significant offset. I am using the 2" Blazers on Axis shafts. The maximum offset the jig will allow is giving me very good broadhead flight.
As it has been explained to me you wouldn't necessarily seedifferent results if shooting both arrows on a nice day at your backyard target. The difference, as some on here who's advice I trust, is in the forgiveness. Such as when there is a stronger wind blowing and your form is not as exact as it could be. The arrow recovers from badform/environmental influences more quickly when the fletching has more ability to control the arrow.
Main reason I started this, was I was out practicing some long shots with my longbow and notice on a bad release how quickly my arrow straighen up with a hard helical.
As BC states, the arrow recovers more quickly after being badly influenced by form in this case but it could be wind, a combination, and so on.
This is a big reason I went to feathers for my hunting setup.