I'll get a photo of what I'm referring to later today. Maybe I'm using the term wrong.
It's just a piece of material that sits on top of the already established ramp angle? Might have some bits protruding at the bottom, if I remember correctly, which fill some voids in the bottom of the shell?
I don't think my UPZ RC10 actually have a boot board!
Will report back later. Over and out. KSHHHHHTT.