Yup, and the full boogie Randy way includes balsa brace posts on 4 corners going to a balsa plate. I think this takes much stress off of the maple glue joint and you are basically closing in a "box", which makes it extra strong for those occasional bouncy landings and rough grass fields.
I've attached a few pic's, one a really bad photocopy of an old drawing, sorry, and a pic of the actual install I did in my Rapier during the build which should help explain the drawing.
Edit: Also note the brass threaded inserts. Makes it easier than dealing with blind nuts, but if you are being weight conscious, there actually is a measurable difference of a couple grams, don't ask me how much, I don't remember, but I evidently thought it was ok.
Hope that helps,
Eric