Lloyd has some 9a's maybe he'll chime in with the info but i dont think there's a flat spot on them (the tip?),they are three sided kinda like a crossbow quarrel i believe.
Archers of the Tees (which must be near you in fact).
Little south of me mate,Darlingtons a bit of a hike for me but looking on there site they have some good shoots coming up.Wand world championship at Raby Castle next month,Raby was the home of the Nevilles, who fought the Scots so well
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The shoots after that are open shoots at the Roman forts on the Wall,Segedunun (Wallsend) and Arbeia (South Shields) i might have a drive up to these,i like a shoot with a atmosphere and they look like a good bunch.