SEEING IM A NOVICE THIS IS WAT WE DO ,GO TO A TREE CHOP BRANCHES WITH YOUR GRAFT MAKE THEM THE SIZE TO GO ACROSS THE HOLE YOUVE JUST OPENED UP DIAGONALLY BY JAMMING THEM INTO SIDE OF BANK YOUVE JUST OPENED UP THEN CHOP THE WINDS DO THE EXACT SAME OR ELSE COMPLETE SODS WHICH WILL THEN HOLD YOUR SOIL YOU ARE BACKFILLING MEANS THE TUBE WILL NOT COLLAPSE AND THE EARTH IS LEFT INTACT FOR THE NEXT SET OF TERRIERMEN ,LEAVE THE GROUND SITTING PROUD BY TAKING SODS OF THE SIDE OF THE BANK AND PUTTING THEM ONTOP MEANS WHEN GROUND STARTS SETTLING THE SODS WILL LEVEL OUT .FARMER WILL BE PROUD AND SO YOU WI