Towel Drill, What am I missing?

[BIF13]

I throw RHBH and practice the towel drill often during the winter when I can't get out on the course. For "shits and giggles" the other day I decided to try LHBH with the towel drill, I actually get better towel snap left handed! Don't know what to do with it, but wanting to get to the field and try some lefty throws!

[BrotherDave]

Random thought popped into my head. Would it be more beneficial to do this drill using a shorter towel, one that's roughly the length of a disc?

[JR]

IDK but Feldy can make a long towel sound POW!!!! Not flap but like two solid objects colliding at high velocity.

[Steady 26542]

I tried to do the towel drill and could never get the "pop." I just kept trying to change things very slightly and all of a sudden I got the pop! Unfortunately, I never got it again and have no idea how I did it that one time.

[Parks]

Not sure if this was mentioned, but I remember someone mentioning that Feldberg said the towel should be limp during the pull. If it is dragging behind during your pull then you are pulling too hard or using your arm too much.

[Stringbean]

Just like the water bottle drill.