Re: Tips for shomen uchi ikkyo ura? anyone?
Something that helped my IKKYO URA was to square my hips with UKE on entry and let the strike proceed ahead adding my own force to it on the downstroke.
This usually has the effect of off-balancing UKE. At this point, we are standing parallel facing the same direction (180 degrees opposite of where I was facing before the attack).
Then I do TENKAN. This puts UKE's arm into SHIKAKU and s/he is launced. The inertia is increased if you TENKAN into SEIZA.