Hi Burr,

> I guess I wouldnt know how the "along surface" works

Along surface can work with any kind of spacing - what it does is incorporate an additional rotation in it to rotate from the base surface normal to the target surface normal, so if you had something that started out perpendicular to the surface, each array instance will also be perpendicular to the surface instead of possibly rotating off to some other orientation which is possible when it is only following a curve path without any surface data.

- Michael