I was practicing yesterday and my first 50 putts were all relatively good while using my putting plate for proper start line. But as time went on I started to really struggle with my start line. I kept hitting the front right peg telling me my putter face was open at contact. I hit the front pegs maybe twice in the first 50 putts, but I started hitting them every other putt it seemed like after that.
So my question is, when practicing putting, how much is too much? Let's say the average golfer putts 36 times per round, obviously one would want to practice a minimum of 36 putts, but at what number does it become too much? 50? 100? More?