Best way to override OnClick with OnPointerDown for Toggle?

Make a class that inherits from Toggle and override its stuff...

 using UnityEngine.UI;
 using UnityEngine.EventSystems;
 
 public class MyToggle : Toggle 
 {
      public override void OnPointerClick(PointerEventData eventData)
      {
          //do nothing... we don't want it do do anything OnClick
      }
 
      public override void OnPointerDown(PointerEventData eventData)
      {
           //do the stuff it usually does
           base.OnPointerDown(eventData);
           //do the stuff we want it to do
           base.OnSubmit(eventData);
      }     
 }

Then take the unity toggle component off, put this on, reassign the target graphic etc.