For a variety of reasons I hadn't flown since early May last year. Had check flights with an instructor and went for extra flights with him to sharpen up my landings - there is only one go at those in a glider.
I was allowed to fly solo again after the first set of flights so I've done a little of that as well. Now I've got it right in both almost no wind, in some wind, and when there was massive sink in the circuit, and on another day when there was lots of windshear in the last few seconds I feel equipped to start flying my own glider again.
To a degree it is like riding a bike, but IMHO what goes is what you learnt most recently so for a low hours glider pilot just about everything, for a more experienced pilot the co-ordination remains, but speed control might not be so good, plus adapting to different conditions, spot landings, and airmanship when other gliders are around.