I am a student and practicioner of Muso Jiki-Den Eishin Ryu Iaido and I have extremely flat feet. I mean really super flat with ZERO arch.
During instruction and kata practice this is becoming increasingly a hindrance to proper form as well as painful to correct. I have considered wearing tabi with arch support inserts as opposed to being barefoot for some relief but I am not sure how effective that will be.
Does anyone else have suggestions?