Just build them and use past experiences to help make newer ones better. I built one in about 2 hrs with my cousin. It took like 3 hrs to set up and didnt look like the original plan when we set it up because it fell apart before we got it in the water. Basically we took a 20ft 2X6 and put 2 PVC pipes on it. Then we had 3 legs shaped like an A to support the slider portion. The legs were 10ft originally but sank down so far that the slider was only a foot above the water. All the legs broke while we carried it, so we had to re-assemble it in the water with nails (not very sturdy). We eventually got it super strong after hammering the legs into the mud/sand. Next time we will know better.
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