EZ-DRAIN Followup
I didn't mean to "plagiarize" the name - it's just what came to me at the time (25+ years ago).
For my particular situation - first a -4 and then an HR II (both with horizontal filter locations), there isn't much room underneath the filter (because of the rudder "shelf" on the FW) for any draining device - so that's the reason for the 90* elbow. It allows a direction change for the drain tube in the least distance - in my Rocket there is about 3/4" between the underside of the filter and the top of the FW recess, not much room to fit an adequate drainage device.
My idea was just to show a simple MYO solution to a problem that plagues us "horizontal" folks.
Even if they were available back then, both of the links shown above would not clear under my filter when it is rotated down for the drain "cycle".
Total parts cost is about $3.00 - most expensive is the hose clamp (and you might already have one laying around somewhere) @ $1.75, the O-ring is $.25, and the vinyl tubing is around a buck. YMMV of course - but these numbers will be close.
HFS