The HotTug is such a brilliant invention, we’re kicking ourselves for not coming up with the idea! Frank de Bruijn is credited as the designer and developer of the HotTug – a little boat made from wood and fitted with glass fibber reinforced polyester. A stainless steel wood stove and a single wall pipe help you keep the water inside as warm as you like. You can boat around as per usual using an electric or standard outboard motor, and be perfectly warm and toasty doing it – once the vessel fills with water, it takes 2.5 hours (and holds a total of 2000 litres) to heat up to 38 degrees Celsius (100 degrees Fahrenheit). The HotTug fits 6-8 people – perfect for those lazy afternoons at the lake when nothing would feel better but a hot soak! By the way, he HotTug can be used as a standard water vessel – no need to fill it with water. If the HotTug is already filled with water, it can be emptied in 20 minutes by an electric submersible pump and used as a boat immediately.