Your just shooting yourselves in the foot (pardon the pun).
Look into ZEM footwear, Sockwa, Zinetic Pocket Slippers, Vibram Five Fingers, Soft Star Shoes, Deadlift slippers, Tai Chi/Kung Fu slippers, Gymnastic Shoes/pumps, Vaulting shoes, Gymnasium plimsolls etc.
Try lifting in barefeet or at least deadlift slippers, not only more comfortable IMO but more bang for your buck.
[quote]The arch of the foot wants to flex (like a bow).
No, lift with lifting shoes.
JC don’t you realise people train their feet all the time. CF used tems machine for his athletes feet. Jumpers do all sorts like wobble board, different calf raises, towell crunches, dynaband exercises, stiffness jumps…..
I dont care for your opinion because for all anyone knows, your a crap athlete and hasn’t coached anyone.