Re: Ikkyo vs elbow or bicep/shoulder
Greg, I don't think I'm quite as precise in my use as yourself. I agree, you need the palm flat to get the spiral to work and I find if I get a side-on grab there's more of a projection away than a spiral down. However, for me the flat of my palm can be against either the pulse side or the outside of the wrist, it just seems to change the actual size of the spiral rather than its entire shape.
Staring to think about it and arguing with myself... thank god for not having open plan offices (have you noticed how hard it is to grab yourself properly, honestly, I'm my own worst uke most of the time)