about what i can afford at the moment. Actually my son and some classmates are building this for a engineering competition. they can only use single ply cardboard and a single role of duct tape. they have 30 min to build it then 2 kids have to get in it and paddle across the pool. this was a practice run and they did 4 laps before they got out. it was a bit cold today so my youngin was wearing his favorite sweatshirt.
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