Share this post370 - The Fighting Surface: The "S.O.Y.F." Drilloneinone.substack.comCopy linkLinkedinFacebookEmailNotes370 - The Fighting Surface: The "S.O.Y.F." Drill(S.I./ H) Self defence from the ground up... a student home training manual ( Complete instructions, photos and DIY home training area).JethMar 16, 2023∙ PaidShareShare this post370 - The Fighting Surface: The "S.O.Y.F." Drilloneinone.substack.comCopy linkLinkedinFacebookEmailNotesThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in