So I've read some articles on how to restrict a survey submissions via geography. One works with min/max coordinates and another mysterious method alludes to using reverse geocoding. The first isn't particularly useful for odd shaped polygons, and the other isn't actually articulated.
For example: If I have a river channel polygon that has a snake-like shape, a big rectangle around the entire polygon isn't going to keep out the points that aren't in the river channel.
I would like to be able to designate a hosted feature layer and have Survey123 only allow submissions within that layer. (pretty please)