Friday 25th May â€“ Sunday 27th May. Â Yarmouth, Isle of Wight. Â All day. Â The Yarmouth Old Gaffers Festival (YOGaff) is your chance to be a part of one of the major Traditional Boat Festivals on the South Coast. The festival lasts four days and packs scores of old boats, dressed overall with flags and bunting, into Yarmouth Harbour on the Isle of Wight. Â It's always a riot of colour and activity, with plenty to do for the whole family from shopping amoungst the mass of stalls, to watching the many entertainers in the main tent or sampling the produce in the Real Ale tent!