I have seen the batco auger hopper that attaches on and has a canvass that pulls up to the bottom of the hopper bin hole. Anyone have one of these? Are they any good? Anyone have a different brand of the same concept? We are picking up our new meridian 10 inch auger soon, and want one of these. We have so many different sizes of bins that it's a pain to have a separate hopper for every type of bin.