Bear in mind, even in late fall, with much of the foliage died off, the hunters could have missed their bodies being five feet away. One can assume that in the summer, with the foliage in full swing, even if an officer walked six inches away from them, they could have missed them. The smell might have given it away, but in the height of summer, that might only have applied within the first few days or the first couple weeks, and LE cannot physically search every possible location, especially in a rural area within the first few days or even the first couple weeks. I can't fault LE for not finding them when it was only by chance that they were found when they were.