Was wondering if anyone carries a battery booster on their boat as an extra safety measure. Every time I shut down my engine when I'm anchored I always get this weird feeling, thinking, will it start when I need it. Now that I've started to take my young grandson with me I would like to have that extra comfort level..Looking at the Noco Genius GB 70. Small and compact, which is what I want. Has anyone used them and what are your thoughts. Thanks.. Newf.