Can you inject concrete through a hole drilled in a gunite pool and then hotpatch an area that is cracking?

CAN'T SAY I HAVE EVER HEARD OF THAT .WHAT I USUALLY DO IS DRILL HOLES AT THE END OF THE CRACKS TO TRY TO RELIEVE SOME OF THE PRESSURE THEN CUT INTO THE CRACK WITH A CONCRETE SAW TO OPEN IT UP SOME .DON'T CUT DOWN THRU THE TANK JUST A HALF AN INCH OR SO .THEN PATCH WITH A COMMERCIAL PATCH OR WHITE PORTLAND MIXED WITH MARBLE DUST.OPENING UP THE CRACK ALLOWS MORE PATCH TO GET A BITE. IF YOU'VE NEVER USED SOMETHING LIKE A RESCUE SAW WITH A CONCRETE BLADE YOU MAY WANT TO PAY SOMEONE FOR THIS JOB.NO MATTER WHO DOES IT THERE ARE NO GARANTEES A CRACK MEANS THE POOL IS SETTLING AND ONE PART OF THE POOL IS MOVING AND THE OTHER IS NOT.ADDRESS ANY DRAINAGE PROBLEMS IN THE AREA AS THEY WILL JUST ADD TO THE PROBLEM

The crack can also be injected with epoxy, which makes for a very solid repair.