Surely if you can get close enough to ram, you could fire some sort of short range net over it.
But why not continue the WWI analogies that we've seen all over this conflict - get hordes of combat flight sim pilots to fly hunter drones. With some natty sensors to aid the Mk1 eyeball, that could be effective, since most of the target drones are looking at the ground, again, a la WWI observers who never saw who shot them down.