I use a straight clear coupling that exits the RV 'dump bay' through access hole in bottom - then connect hose(s). I have a couple of 10' lengths - the Rhino seems to be sturdier of the two. I do have the plastic graduated accordion supports which do help especially for longer stays.
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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