OUCH!!!!
I took mine off only because when i last went on a trail by my house, i crashed and broke it (don't ask me how. . . . dont fully know) so i got that all checked out and then never put a new one on. I don't think that you really need one. How often do you have a kid kick that spot?? when i crash i always check over that stuff so im not scared that it will brake on me!

Jared