Have you ever planted late August for late autumn lifting? Seed was unavailable so I chitted some likely-looking eaters. It worked, but I lifted too early - couldn't resist.
Never tried it, but might give it a go if I've got the room. ~What sort did you use?
We did plant some in Sept for Christmas harvest. Worked like a dream 2 years ago and we dug up fresh tatties on Christmas day. Last year was an unadulterated disaster and we lost the lot to blight :(
I bought them from a shop which "sells only locally-grown produce", so asked what variety they were. He didn't know. "Where do they come from then?" Not so local, and could have been bought in. I have to cover any emerging crops with fencing wire, you know the sort, plastic-covered with about 6 sq cm holes. Keeps our, and neighbours', girl thingy-cats off but lets air and light in. Raise the wire by putting bricks/stones under it round the perimeter as necessary, until it doesn't matter if the cats get back in or not. I'm talking pocket handkerchief-sized plot, as the rest is stone and rock They took the topsoil away when they built the houses. A neighbour gave me a photo of how it used to be - grazing sheep amid grapevines. Soil changed every year to at least a depth of 50 cm which solves rotation requirement. Courgettes follow potatoes, as well as anything else that takes my fancy. Just up the road there are broad beans in flower. Frost still possible.
You can save some first early potatoes and plant them for Christmas potatoes. I dug them up earlier than Christmas though but perfect spuds.