Both techniques were used. Flt Sgt Paul Leva, a Belgian flying a Spitfire XIV with 350 sqn brought down a V1 by tipping it off course using his wing tip, but this invariably resulted in damage to the Spit, as Leva's wing tip required replacing once he had landed.
There was a crazy idea of someones - not sure whom - wasn't Supermarine's as far as I am aware, where a hinged arm fitted with a spike at the end of the arm was attached to the wing tip of a Spit, which would swing down and engage into the wing of a V1, then the Spitfire pilot would turn his aeroplane around and release the arm, which would send the V1 hurtling away in the opposite direction.
There was a crazy idea of someones - not sure whom - wasn't Supermarine's as far as I am aware, where a hinged arm fitted with a spike at the end of the arm was attached to the wing tip of a Spit, which would swing down and engage into the wing of a V1, then the Spitfire pilot would turn his aeroplane around and release the arm, which would send the V1 hurtling away in the opposite direction.