I really dislike the standard 'long' handle for cub flaps.
My legs are short but I got the Clydesdale genetics for diameter. Not enough room for flap handle, full left aileron and my leg to work rudders without resetting the stick WAY over to the right.
My friends plane has the Keller flaps, and as I recall the short handle. seems very easy to release.
That said, I fly lots of Skywagon, and newer ones, which takes the same arm strength as a 1960's Ford truck without power steering.
The Maule is no picnic either working the flaps, but if they pull hard you are over speed...
Gizmos are gizmos. There is one for each of us to like- we are lucky folks still try to innovate.