GSI drew big crowds with this prototype inflatable "FlexWave" floor lining that eliminates the need to shovel.  Once you've got a bin emptied as far as it will go without shoveling, you simply inflate the ballon-type floor liners on each side of the bin and it inflates to dump whatever grain is left into the center unload auger. Photo shows one half of floor liner inflated, channeling grain to unload auger. (www.grainsystems.com/flexwave/; ph 888 249-4790)