I am finding the posts on weights and endurance very interesting. 
This question is directed mostly at Bob Morris.  How about some hints on
how a heavyweight competes?  For example, do you post a lot during a
race to help keep the weight off the horse?  Do you get off and climb
hills or climb downhill.  Any other hints are appreciated.
I am a middle weight but still, weight is weight and anything I can do
to help preserve my horse's back is helpful to me.
Thanks!
Kimberly (&Mystery the Morab..."yeah, get off and walk!  sounds good!")
Pt.Reyes, CA