Now that's an interesting concept! Find somebody trashing an Intex donut and,well here's an idea: Make a combo clamp, return out of hard PVC. Make "U" that hooks over the side. The water goes from the pump into the bottom of the "U" on one side and into the pool on the other (with a 90 deg bend so it's not all the way down). The drain would go near the bottom of the pool, on another "U". Again put a 90 deg bend at the bottom. All this stuff is available at Home Depot for maybe $30. If you have an old Intex, with 1.25" pipes, you'll want to use PVC with a 1.25" OD, and you're all set! Just being inventive.

Carl.