While they are not an absolute necessity, they are very convenient - as stated by several folks over the years. The reason for setting them up is for the few that arrive just before evening twilight, or leave around midnight, or (believe it or not) some that leave before morning twilight. One might even call them a nicety. Clear skies, aj ----- Original Message ----- From: "gene lucas" <geneluca@xxxxxxxxxxxxx> To: <sac-board@xxxxxxxxxxxxx> Sent: Saturday, February 16, 2008 3:44 AM Subject: [sac-board] Re: Blinker lights <snippet> For the Messier Marathon, I am open to various suggestions for marking the driveway, if AJ feels they are needed. As I have not participated at Farnsworth Ranch for some years, I can't comment further on what might be useful or needed. <snippet> Gene Lucas (17250)