If only there was a system whereby we could avoid all the red tape.
There is, it's called ignorance, just come and go as you want and always have done and very likely you wont notice any difference.
My CDS has not been asked for or looked at in a very long time, it's now lost together with my wallet, Carte Vitale & other stuff, I won't be replacing it, as I have found with the C.V. (where replacement is becoming a fiasco) the attestation de droîtes or the paper copies that came with the C.D.S. have exactly the same value.
My passport got stamped once only, last few times it's not even been asked for when I was waved through, when it was asked for the guy didn't even look at it or even make eye contact with me once, so engrossed was he with chatting to his colleague, had I known I would have worn a horror or Trump mask!
Maybe for you, but not for other people........My passport as is everyone elses on Brittany Ferries is examined at great length by the French passport control staff, never missed, and stamped religiously every time on entry and exit, it took us nearly 2 hours this visit to get though as we were on the upper deck
But would they actually do anything if they were to notice you had spent more than 6 months in 12?
I appreciate that you dont want to take the risk and want to be correct and I am not suggesting that you or anyone do otherwise but there has been an air of panic since Brexit stoked up by people on social media who get a kick out of making others anxious.
There were and still are tens of thousands of non EU citizens living and in most cases working happily in France for decades without titre de séjours including Australians, Americans etc, they are not refused entry at the borders when returning to France.
The point at which it becomes sticky is when someone becomes a burden to the state but even in that case can anyone show me any examples of UK citizens being served with an OQTF notice other than that potty mouthed woman on Facebook applying for a Carte de séjour prematurely and even that was recinded, in her case it was probably done out of spite due to her attitude.
Le ministre de l'Intérieur Gérald Darmanin affiche sa fermeté sur l'expulsion des étrangers clandestins qui font l'objet d'une obligation de quitter le territoire français (OQTF). Mais pour le président par interim du Rassemblement national, Jordan Bardella, le bilan du gouvernement en la matière n'est "pas à la hauteur" : "90%, ce sont les chiffres, c'est le bilan du gouvernement, 90% des obligations de quitter le territoire français ne sont pas exécutées. Donc aujourd'hui tout le monde rentre dans notre pays, mais personne ne sort" , affirme Jordan Bardella mardi 26 juillet sur BFM. Un peu plus de 90% d'OQTF non exécutées
Le chiffre avancé par Jordan Bardella n'est pas loin de la réalité. En 2020, sur 107 500 OQTF prononcées, moins de 7% ont été exécutées. Et le taux est encore un peu plus faible sur la première moitiée de l'année 2021, d'après les chiffres du ministère de l'Intérieur cités dans un rapport du Sénat.