Will be building a twin Vertex 9"diaphram head and can not tell upon placement if heads are parallel or perpendicular to waters surface. My thoughts are to build an assembly that looks like Princess Leias head 2 Vertax perpendicular to water surface. Will suspend 14ft down at 30ft depth and leave it there during summer. No weight to hold it down other than weighted hose and a boat fender (rubber buoy) at top of 14ft rope. If I build head with both Vertex parallel upon placement I will not be able to know relationship of heads to waters surface. Thinking Princess Leia head design (opposite and equal reaction ) will prevent possible up and down bouncing of weighted hose on pond floor. As usual am I over thinking a simple problem?

If it ain't broke fix it.