In reply to The Ex-Engineer:
> The latest Will Gadd article linked above is excellent and it is fantastic to see he has amended his previously questionable advice.
> I won't repeat all the points he discusses (you can read them yourself) but for UK trad climbing (no bolted anchors and belayers generally not anchored) it is pretty clear that the default position should be NOT to clip any part of the belay as a runner.
I'm not so sure. In the case of someone falling 10m up the pitch on steep rock and taking a high factor high energy fall, then I see the logic. But often the reason to clip the top of the anchor is in case the leader slips in the first 1 or2 meters before she gets a runner (a pre-Jesus tactic), and on most trad routes of the grade that most of us climb the result will be a tumble onto the belay ledge and roll over the edge. The energy in the fall will be small, the effective fall factor low. In this case the important thing might be keeping the belay plate the right way up and the belayer doing something close to normal.
Even on steep rock I'm not sure one can generalise. If I was belayed in the boulder ruckle sitting on the mid height ledge, I think I would clip the rope into the top of an anchor. The move off the ledge will be steep and the rock poor. A handhold snapping at this point is not uncommon. Without the rope clipped to the anchor the leader would fall over me and the rope cut into my legs big time. With the rope clipped to the anchor off to the side, she will miss me, and the rope not touch my legs.
What is great is that Will's and other people's writing is now getting us to think.