Anon from the spear question, I was referring to the length of the frog spears and their usage in combat.

Ah, I see what you mean. Well, they would probably be on the short side, because normally frogs are hunted in fairly shallow water. They’re not made for combat – the multiple tines, for example, are actually going to be something of a hindrance against armor – so I would guess they would be only modestly effective unless combined with poison as per crannogmen doctrine.