Looking for ultralight flyers - the lowest and slowest

Hi, I hail from the UK and favor prop t-offs/landings on small fields, whether oifficial or just random fields. I like dropping Savage Cubs, or even Spitfires, into the tightest of spaces.
Here in the UK there are many small fields, unlike your prairies! I have only the MS20 original planes, the slowest being, I think, the Cub? If you still fly, I would like to join a flight sometime.
My passtime is tracing old, disused WW2 landing grounds (now built-up estates) and dropping into tight, level patches nearby that once were former runways. The US/UK time difference may be awkward, though.