Is a wake evidence of a boat or a wake?
Deformed, you say?Both, assuming that you mean the tracks left by an object moving through water and not a ritual observance for the dead. Wake is evidence, but not proof. Some such tracks may be due other things, like perhaps a whale or a school of fish, Other evidence may help us decide which, like the shape of the trail, where we are (wake in a lake is probably not a whale), or seeing or hearing the craft or whale that left the wake.
You have a very deformed understanding of what evidence is and how to interpret it.
You say the wake is evidence of a boat.
Or a whale.
Or a school of fish.
But it's evidence of a boat.