By Evan Dawson, Finger Lakes Editor Photo by Morgan Dawson Photography Most Finger Lakes wineries close their tasting rooms by 5 p.m., even on weekends. But a growing group has decided that later hours means better business and more intimate interactions with their customers. "It's a great way to unwind after a long day on Keuka Lake," says John McGregor of McGregor Vineyard. He says McGregor launched the concept of "sunset hours" some time in the 1990s. During the summer the McGregor tasting room extends hours until 8 p.m. on Friday and Saturday nights. One big factor, according to…