But then he'd have to hire someone to kill the hole digger...
As one who read the poem and was caught away by the sense of adventure it instilled and dreams of treasure, I read up on the chase. Turns out, the chest was not buried. If you were in the right spot from the poem, you could see it was just placed on the ground.
Where did you read this? As far as I know the only information about the location of the chest and how it was hidden comes directly from Fenn.