For a school project, we have to create a model boat that can get over an object in the waterIt has to get from one side of the mini pool to the other and cross the solid object in the middle (which is higher then water level)CATCH-We can only use objects from Lincoln's time, which is the 1830s to 1840s in this caseOur original idea was to create a Chinese lantern with a short candle wickThe boat would float up, we would give it a push (which is allowed), and the wick would burn out once it got acrossUnfortunately, no fire or other non-school-appropriate items are allowedAny ideas on how to accomplish this?