Maybe when Harley redesigns the engine in another hundred years they can find a location for the oil filter where it hangs vertically. Or maybe just eliminate it altogether in another cost cutting frenzy.
I've tried the cut down 2 liter drink bottle, a couple of different purchased drain tray devices, and finally a large heavy duty plastic zip-lock style bag. Break the filter loose first, then slide the bag over the filter as far as it will go and spin the filter off through the bag. Other than needing three hands to do it, the bag method at least has the potential to eliminate handling the always messy filter. Oh, I almost forgot, I also tried the "drill or punch a hole in the filter" to drain off as much oil as possible with the tray before actually removing it. While that helped with the gusher as you loosen the filter, it still requires three hands and a lot of shop towels. I've suggested to others, but haven't tried myself, that they install a hoist and rig it up so they can lift the bike so the left side faces straight down. I'm still waiting to hear back on that one.
Jerry