Bond's plane

The plane is something I don't quite understand. He arrives with too much speed, so the plane drifts too far and ends up 'stranded' on the beach. Was this necessary?

How was he going to get the plane back into the water? By pushing it?

Why couldn't he 'park' the plane more feasibly, so it would be already pointed at the ocean, ready to leave? Do these planes have 'reverse thrust' for backing up? (Inverting the propeller direction, maybe?)

Why doesn't Bond do _anything_, except 'look worried', when he KNOWS Scaramanga is going to blow up his plane? Why not just do the movie-typical "No! Not my plane!" and push the 'sun-powered cannon' away or attack Scaramanga or something? Or remind in an english, posh accent that "Excuse me, Mr. Scaramanga, but that plane is most expensive, and the British Government would frown upon it being demolished, so if you wouldn't mind not aiming that thing at my precious transport, thank you very much"?

There's NO REASON for him to let Scaramanga just slowly and carefully aim and shoot that plane.

So can anyone explain ANY of this to me? This whole plane thing makes no sense at all.