The land at my cottage has the perfect slope for about 50' and ends up in water the perfect depth. All I need to find is a cheap source of large pipes. I plan to cut them in half and support them from spreading open with wooden frames. I plan on using a spare jet pump to keep water flowing down the slide. If I need more flow I can run it toilet style filling a tank and letting it flush. <br /><br />Any clues on where I can get pipe 30"-36" wide? Plastic would be perfect, non-corrugated.