For absolute fastest XP...buy those pesky dragon hides and go sick . And yes, you might want to kill em yourself (bonus prayer is nice too) Having done a little crafting, what I'd recommend is a mix of the following 1.Spin flax 2.Glass/Air orbs 3.dragon hide armour These are the three main ways i've worked on Crafting, and Whilst spinning flax may not be the fastest XP there is, when I look at the 1000's of magic longs i've fletched and hi-alched and spun the bowstrings myself i certainly don't regret it. I figure by the time I do get to 99 fletching I will have made every bowstring myself...with no pain. I don't exclusively do crafting, and I'd rather meander along making a little money along the way, than "churn" for levels aat a loss, but best of luck with whichever way (or ways) you choose to go