TheSheriff I somewhat agree with you both @FlatCapper
It shouldn’t be subjective. Be clear, any head contact is a red and then assess it on review for severity whether the player is going down or not, just accept even if you accidentally bounce up off the ball a foot off the ground - unlucky.
If it is a tip, then the second the player is above the horizontal same.
Take the feeling out of it and make it easier for everyone, including Ref’s you’re not interpreting it, just applying the rules.