Ridecamp: [RC] saddles and saddle pads

ridge runner rafrnhm@xxxxxxx
I have completed one 25m finishing well, in a stuben jump
saddle.  I now would like to pursue a 50m but am concerned
about the pressure a jump saddle places on the tenderloins
of the horse's back.  I ride with a short stirrup, either post
or two point unless at a walk, making all efforts to remain 
balanced over the horse.  I have two questions:
  1.  Is there a preferred saddle pad that will provide good protection for this area of the horse's back but will also
fit a saddle with forward leg panels.
  2.  What kind of mileage and how long should I expect to
need to prepare for a 50m on a horse that is currently doing
9 miles at 5 and a half minute pace?

I appreciate your comments and shared experiences


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Ridecamp is a service of Endurance Net, http://www.endurance.net.
 Information, Policy, Disclaimer: http://www.endurance.net/Ridecamp
 Subscribe/Unsubscribe http://www.endurance.net/ridecamp/logon.asp
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=