Its  position in relation to the main wheel will determine whether the glider sits on its nose or its tail when on the ground.
And while we are talking about the C of G:-
Etc. etc.  KNOW YOUR GLIDER / GET A BRIEFING
Nose up types may ‘balloon’ on landing and are also susceptible to weathercocking in x-winds/ groundlooping because of C of G effects
This affects the handling on takeoff and landing
Nose down types may be harder to keep straight when taking off in a cross wind.  Also beware PIOs