all the moves seem to reduce to going round in small circles or taking 3 steps forward and 3 back.

Bourée (& one verson of the Slang Polska) maybe. Yes I like. Though variations like Morvan, Bourée de Grande Poitiers, and Auvergne would not sustain me long. Anyway, my 2-3 mile daily walk tells me I would not be entirely fit for every dance - now. And as for dancing in masks - NAH. The ducks are happy - so one plus.