Using duct tape and skewers to hold together the sides while the great stuff foam cures. This little boat is a cross between a conventional boat and a pirogue and due to the low sides should only be used by a good swimmer close to the bank. We are not sure how this will turn out but it will never sink. How to build a cheap boat, foam kayak, easy kids project, camping boat, tiny boat for a small car to carry. Boogie board boat build, tear drop camper, shot with go pro