Single or Double?

[Doba]

Is the chain spear (flying talon) a double weapon?

It's not listed as such, unlike all of the other double weapons, but it has damage listed as if it might be (1d6/1d6).

I could see it going either way. I could see it as a two-handed exotic that you can use either one or the other end at a time, but not both in a full attack. Or it could be a two-handed exotic weapon in which you can use each end in a full attack, using either end as the primary weapon and the other end as off-hand.

[Shoga]

I can see your point here. Making it a double exotic weapon would be up to your GM. Otherwise, when you attack, you get to choose which end to use. If you want to trip with it, you have to use the chain part.