We use hog panels at 34 inches high and never had cows in them in 3 years. One place years ago I did but guess the one cow was just stupid. He did tear up my panels. I would cut out some sections and try it.
I also do 2 cut outs per pen down to about 30 inches. I have seen twice this year, yearling does just kicked of by mom go to those sections to jump in the pen. Never had a cow get into pens in the 5 years I've had em up.