That looks painful, sorry about the blood loss. I have only grafted a few persimmon and pear and have always used a bark graft. Not sure how it compares to the other types of grafting options out there but I know it works for me. I will be grafting some apple and a lot more persimmon in the next couple of years. Not trying to be a smart a** as I realize that cuts are possible doing almost any type of grafting but just curious as to the type of grafting you were doing?