Every year we go with a group of friends to an all night beach BBQ. I want to take my dog with me this year, but in order to keep him in sight, I thought of attaching a flashing light to his collar. I want a good quality one and could kick myself as i saw some at Crufts but didn't buy any. The dogs are off lead all night as we are the only people on the beach and there are no roads nearby. Also, as this takes place in Scotland and at midsummer, it doesn't really get properly dark, but I'd still like a light just to be able to see him clearly if he decided to go off with his doggy pals for a spell. Anyone have any recommendations/suggestions?