RE: Arrow Spin?
More spin/helical slows your arrow quicker(quickspins).
A plane and an arrow are not really comparable. And actually the wings are what stabilizes a plane.
When you shoot/throw a projectile, spinning stabilizes it. Bullets are spun with rifled barrels. Footballs are best thrown as a spiral, arrows stabilize best when spinning.
Why is a knuckle ball such an effective pitch in baseball? NO spin=erradic flight=tough to hit.
Do a google search on "lift" & "drag" when applied in physics. You'll learn some things.