Snoring

I snore.
Like a wounded hippo gasping its last strangulated bellow, I snore.
This happens as soon as I am asleep; often just before (which wakes me up).
I have tried sprays and little sticky clips on my nose. Useless.
I have also tried a thingy that goes in my nose and makes me look like Va'aiga Tuigamala. I sleep better (more air) but just as noisily.
I now have a gumshield thingy that brings my lower teeth forward about 10mm and stops my flobbly airways thingies resonating when I breath. I combine this with the thingy in my nose.
This works, but I have a tendency for it to drop out. I think I need some sort of over-the-head device to keep my mouth closed at the same time.
I am, in summary, turning into Darth Vader.