I think in Finland the traditional method of threshing was something like this:

First, bundles of rye were taken into a big sauna. The sauna was kept warm for couple of days, to ensure that the rye is completely dry. Then the bundles were placed on the sauna floor, and beaten with a grain-flail. But I don't know how they then collected all the seeds from the floor... Sami was doing that at least once, I can ask him. But, anyhow, I think that a grain-flail would be an overkill with my small amount of rye. Maybe if I just put a big canvas on the yard and then beat the bundles against the ground - shouldn't that leave me with a bundle in a hand and kernels on the canvas, hmmm...

And "kippis!" for your wine :)