I agree, djawhufc. We are supposed to submit our solutions with the preamble cut off, so there should have been a hint that the buried treasure was in the preamble rather than in the grid, not just that "this was the only place where the letters appeared consecutively in a straight line", as the setter points out in the solution notes on the listenercrossword.com website (anyway, what about the space between the "h" and the "are" in "search area" - are the four letters really consecutive?).
I'll rate this puzzle as a good idea let down by the last bit of the endgame.