Hello, I'll be heading to my first track day soon and was researching info for newbies. I've read quite a few posts and everyone's recommending a back protector when doing track days. I'm going with a rental 1-pc which I think comes with a foam back insert. Should I be wearing additional back armour? I have an Icon vest which has a hard back and front (although the front is not CE certified). or should I be looking at some of the other racing brands such as Dainese which has both front and back? Any advice is appreciated.