Anchoring Island Hopper water trampoline and water bouncer

How to simply anchor your island hopper water trampoline or water bouncer using the mooring d-rings attached in the interior and exterior surrounding the tube. Use a cinder block and rope from your local hardware store is a great choice. All boat anchors will work as well. When anchoring in a wavey and windy area, we suggest using a bungee cord as the main connector between D-rings and the rope holding the anchor. This provides less strain on the D-ring while consistently moving arean.

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I hope you can help me. I can’t find an answer anywhere. We basically want a water trampoline, but simply flipped over so we can use it more if a sitting area for us adults whole the little swim around in the enclosed area with the trampoline bottom or floor (since we’d flip it). Has anybody used a water trampoline in this way that you know if? I’ve seen plenty of party floats that have mess on the bottom, but none of them seem to be deep enough.