Originally Posted by Darrin
-For pacers you want to shift your center of gravity back. For trotters you shift it forward. How far you shift depends on your horse.
According to the book Easy-Gaited Horses (cause I'm no expert), it's the other way around. Back for trotters, forward for pacers. That's why when Icelanders race at the pace, they sit up straight even though it's not aerodynamic.