This came up in the game today, and whilst we had some amusing suggestions, taking it the Forum was also recommended.
Normally, when the physics of motion is applied there is a force acting against a mass. This remains true for a Case walking on Luna, a Bouncer on Locus, or even a Cloud Skate on a gas giant.
But what about the Surya? We are told they "surf the solar wind" (p99 Morph Recognition Guide) but that's only in one direction.
Do they travel against the solar winds by tacking? Is that even possible without surface tension?
How do Surya move?