My wife, daughter and one of her friends and I were out on the lake yesterday going tubing and Skiing. I got the boat unloaded and push off into the water and the boat would not start. Now this is a mini vacation for my wife and she has wanted to get the boat out for a long time. The battery was dead. She actually started crying a little. I felt so sorry for her. So I loaded up the boat and looked at the terminals and realized the possitive terminal on the main battery was corroded. I took the battery out and used my Leatherman Blast file, to clean it really good. Then I took the trolling motor battery which was good and swapped it over. Hooked her up and we boated all day long with no worries. My leatherman made me the hero for the day. I used the pliers, file and blade. Hey its all the tools I had with me and its all I needed. Now she sees why I carry my multitool every where we go. She even stated that she wants one to carry in her purse. That Blast is a great little tool. Oh, on a side note, I charged up the other battery and its now fully charged. So I have both batteries back in the boat. Thank goodness for Leathermans.