How hoplites carried their spears

[Sean Manning]

As far as I know, the general consensus is that hoplites generally fought with their spears overhanded.
Does this mean that they carried their spears with butt end sticking upwards during march?
I can't see how else they could have hold the spear overhand without being extremely uncomfortable.

Do you mean march on the battlefield, or march from camp to camp? Hoplites normally marched without most of their arms on, so probably carried their spears point upwards if they carried them at all. In battle, I expect that the first three ranks (who might actually fight) used the point-under-fist grip, and the rest used the point-over-fist grip.

Xenophon has some interesting and troublesome quotes on this in the Anabasis.