Re: RE: "the missile to fly upside down it would immediately crash"
Eric "Winkle" Brown (often mentioned in this parish) was one of the test pilots responsible for developing counters to the V1 attacks.
He says in his book (Wings on My Sleeve) that you didn't have to touch wingtips, I think you had to fly with your wing beneath the V1 and that caused its to rise - as you were effectively generating extra lift. Then it slowly tipped over.
Incidentally there was another reason for the wing tipping. I don't think it was the V1s going boom when they hit the ground. There was the obvious problem of the fighters being slower - or similar speed, making interception harder. Also you had to blow them up when on a collision course.
So the big problem was they had huge warheads that would probably destroy the intercepting fighter in the explosion. Even in 1944 fighter combat was at very close ranges. Guns were sighted for only a few hundred yards. this isn't an ideal distance to blow up a half tonne warhead at a closing speed of about 800 knots.
There was another cunning plan too. Newspaper reports of the explosions were doctored, to suggest the V1s were landing long - falling the other side of London. As were intelligence reports from the large stable of double agents the British were running. That was operation double-cross I think?
This convinced the Germans to change their navigation settings, and left a lot of V1s dropping short in Kent.