A crossing of Antarctica must touch any point on the ACSA. If it does not touch the ACSA, then your journey is not a crossing. Select another path.
There are multiple forms of support, check definitions under Guidelines / Aid
Select more than one Mode of Travel if the additional mode is planned and will be sustained and repetitive. Snowkite
journeys are not required to list Ski as an additional discipline, it is implied.
If you prefer to use sub-mode terminology instead, add it below
Examples: Fatbike, Catamaran, Snowshoe etc.