On our little Hartley we usually leave the headsail up when flying the
spinnaker - it gives just a little more sail area and means one less trip to the foredeck for the crew. The only time we'll drop it is if it's a really long run, when there is hardly enough breeze to fill the kite or when nearing the gybe mark.
To gybe, the crew goes up to the foredeck, drops the headsail to the deck, gybes the kite over and re-hoists the headsail when he gets back to the cockpit. Fairly simple really..
