The Technique of Travel : Page 113
On traverses the uphill pole should be pointed farther back than the lower, and the hand should be placed over the top of the lower pole, in effect to lengthen it.
During the two-step the poles will best help to propel the glide if they are placed well forward and all the upper body muscles used in the thrust.
The skating stride is stronger and steadier if both poles are used together on a backward thrust for each glide.
Lakes make the best boulevards, streams the poorest. Rush Creek lakes lead a ski mountaineer in toward Mount Ritter. Illilouette Creek crossings can be tricky on the way to Mount Starr King, in Yosemite. (20,21)