RedactedNarrative: Sheriff's Office was dispatched to a boat fire at a dock on Lost Lake - Lake Minnetonka. As the deputy approached, he observed a small aluminum boat (WC #1) burned to just above the waterline and still smoldering as firefighters were spraying water on it. The bow had melted down to the waterline. The transom was still intact and was supporting an outboard motor. The city dock and security gate were burned and charred. Another boat (WC #2) was slipped just west of the burned boat, this boat had melted fiberglass and upholstery along the starboard side. 
  The owner of WC #2 said he had not used his boat that day. 
  The owner of WC #1 said he had been on his boat earlier in the day. When asked if he had fueled his boat and if he had any special electronics on it, he said he had not put gas in it that day and he did have a bow mounted trolling motor with two batteries in the bow and one battery at the stern. He said he did use the trolling motor briefly and remembered shutting off the batteries when he slipped the boat. He was unaware of any mechanical issues or anything on the boat that would have caused the fire. The repair shop and insurance company were unable to determine the cause of the fire. Watercraft #1 was a Total Loss.