Reading the description, I felt that waiting for the overloaded page to load was going to be a waste of time. Having seen the video, I am contemplating tossing him some cash.
That wiggle makes all the difference. Come to think of it, I might unconsciously wiggle things while I'm trying to remember where I meant to drag them to.
Absolutely correct, the wiggle does make it happen. One of those "Why didn't I think of it" interaction technique.
Kudos to the developer. Just a (very) minor change will make it better for me: slightly less opacity for the pop up window. On an 11inch Macbook Air, I think it'll help. I just bought the app, it's fantastic and worth every penny.
My trick for more control on a Mac trackpad (the "magic" one at least) is to use the thumb for the click action, allowing you to hold it down whilst having full control of the pointer with a light touch of the index finger.
Drag, think... doh! wiggle, store. Dig, dig, find, unstore, drop.
That wiggle makes all the difference. Come to think of it, I might unconsciously wiggle things while I'm trying to remember where I meant to drag them to.