GIB
There are many things to consider when finding a suitable starting point. Regardless, when I found the head of the horse, the clues expanded out from the "blaze" of the horses eye. I had the spot, but I had no idea of what direction I was going. The puzzle unfolded one clue at a time getting me to each of the points. The word "it" is where the seeker/guide places us at that moment "in" the puzzle, on the map and in the poem.
As a poet,
I dream.
I fixate on the moment then, expand my thoughts beyond space and time.
This is how I think.
I use concentric circles, first microscopic, then beyond the imagination, then, ratchet it back, step by step, with smaller and smaller circles. I do this 100's of times, just on one portion of quatrain or even a single word, then, back to the stars I go.
The intro of the poem is the alpha and the omega. It is a prelude of what is, what was, and what is about to come. I say this as a poet and NOT a puzzle solver. Two very different mind sets, with completely different trains of thought, so please don't confuse the POET with the puzzle solver.
There were times that I was completely lost in my mind as to what the puzzle master was saying. I didn't hit every mark perfectly until I understood with a 100% certainty, that I was in the puzzle masters head, and understood the clue.
My wife, knew, and knows when I'm not anywhere near earth, when I was in deep thought on Fenn's puzzle. 2,3,4am I would awake with the solution. (This is my normal sleep cycle when I write a lyric set. I have actually composed and solved many lyric sets in a sudo-transcending sleep) a love but also curse.
I progressed through the poem, and then went back to the top and did it again. I drew the lines three times a day, on a blank computer screen and then printed them out, put them back to back and in front of a bright light to compare the results. Not one time would it deviate more then a few feet. Better than any 8digit grid coordinate for accuracy.
This is how I knew that when I actually went to BOTG, I could move with confidence, and yes, I was mind blown, when the mausoleum appeared through the thick trees.
This is why I say, study my solution. Connect and draw the dots and lines on your own. Then take the journey as I have, and believe what you see on the UU mark. Just do it with reverence and respect to the nature that will surrounds you. This is a Holy place. Not necessarily the mausoleum, but the Y in the triangle, or just a bit north in the wash fold, where the Apache, would have left their dead.