On June 23rd, the day after it was announced that the search at MIRA had ended, FD set off his GPS when he was out driving on Silver Spring Rd which runs between NC and Wilton, and which briefly crosses the state line into NY (but there isn't a sign).
Even before this happened, I had pegged Silver Spring Rd as a place to dispose of a body within reach of Welles Ln, because it is so remote and wooded, which although there's a lot of woods in this area, is still unique because it is much less suburban and still undeveloped back there. Silver Spring Rd. gets really rough in the stretch before the Wilton line (where the pavement abruptly changes and smooths out) and so there is little to no traffic back there. There is also a branch (East St) that crosses Browns Reservoir. (The reservoir isn't always full at the crossing, sometimes the water is low and muddy flats at the road level.)
BUT: this would be a place where one could go and dig a grave and not be seen, most especially if at night. It is a big expanse and it would be hard to figure out without clues where such a grave might be. He could have easily done what KM did back there and it would not be noticed, especially in May when all the leaves are out. Whether or not he put her there, he might have gone back once he felt relieved they didn't find anything at MIRA, and covered up anything or checked on things.
AND: way earlier in the thread back in September when they released the info that FD had travelled back there, someone did the drive from Waveny and it more or less fit the time points exactly. (I think it was 18 minutes RT from Waveny, which added to the Welles-Waveny trip and the little piece on the Merritt to NC rest stop added up to 47 minutes).
SO: It is possible that FD was attempting to distract or mislead with his little foray out there setting off his anklet just after LE finished searching at MIRA. (When one is wearing an ankle bracelet, you would think you would be careful where you went, but we see FD is very stupid.)
But now we see that KM dug a grave in a remote place, and went back to it (on 5/31 at 11pm) to revisit/patch over the site once LE got heated up (think of the stress for KM on the 31st during the Albany investigation on the news).
The problem is, I don't think you could do a blind search out on Silver Spring if you didn't have some clue where to look, there would be too many places to look. I don't know if LE did ever search there once they found out that's where he went when he set off his GPS. We never heard about them searching the gun club property but now we know they did, so perhaps they checked it out and the media didn't catch wind.