Its firm, rounded shape reduces memory, guarantees smooth casting, and improves the overall fishing experience
The first thing I pulled out of the box was a fairly detailed instruction sheet, along with a postcard-size cheat sheet explaining how to unlock the pack (so it could float on the bungees), lock it (giving it a rigid connection to the frame, so it acted like a normal pack), adjust tension in the bungees, and take apart the frame
Once the weight is on the bottom, jiggle your rod tip to impart some action to the lure
Of course, if you plan to use this inter-frame space, try to fill it with heavy items like food
This is a technique that can be used to catch much larger fish, but the hook must be of the strongest material available