I have recently seen an infomercial on TV for a training device to help golfers work the club from the "inside," writes noted golf instructor Mel Sole in his latest GolfInstruction.com article. The cost of this device was $80. Here is a teaching aid that will cost you nothing and do the same job! All you need are two golf club boxes and some tape. Work with this for an afternoon and you'll find the results quite amazing! Plus, you've saved $80!