![]()  | 
  
 [RC] Diagonals - Aaron TurnageBeth -  
The simple answer to your question is that people were saying you should be down when the uphill foot is down when riding on a slope.  Since the downhill foot is bearing the most force while riding at a slant, posting on the opposite front fore will help to aleviate some of that additional bearing force from the rider. 
~ Crysta 
 
  |