Tommy, The Litter Picker Boat sounds like a really interesting invention. The boat can carry 20 people for 10 days and is powered by the wind, and it picks up litter in the sea. You said it is a ride, so I am ingraining that it is like a cruise. All the 20 people get to relax and have a great time on the boat, while also knowing that they are helping to clean up the seas and oceans by choosing to take that cruise rather than another one. I think that being able to store the excess energy produced by the wind is a great idea because it means that the boat and passengers will never be stranded. Great work, Tommy, keep on inventing!