need a metal detector

I am 99% sure that the shoe is in the round pen.  Unfortunately for shoe hunting, the round pen is very deep in sand, which makes for good rolling and trotting, not so much for finding a shoe.  Just to be sure I have walked over every inch of ground that we covered yesterday and thoroughly searched her pen and shed.  I really hate to have to pay to have a new shoe fitted and put on ($40) instead of having the old shoe tacked back on ($5).

I am going to give it one more day to turn up.  I really don't have $40 to throw away.