Hi Lee, Over time, it became prime real estate....Giza eventually became a very crowded cemetery, and we have trouble making sense of it all due to the remodeling, (re)building directly on top of existing, etc.
Great point on boat 'ownership'....I've always assumed that (at least) one of the boats buried right next to his Pyramid belong to him, (Khufu) but we just don't know for sure. The 'pointing East' idea does make sense, but the boat pit layouts and orientations may simply be the result of a lack of space, (or original purpose).
Quoting Lee, "....What is also interesting to me, though there are early Dynastic boat burials at Saqqara, to my knowledge there are none associated with Djoser's step pyramid or the 3rd Dynasty. If correct, a glaring omission of tradition I would say. Boat burials are suggested to have been found at least until the end of the 2nd Dynasty with some at Abydos attributed to Khasekhemwy, but there is no direct evidence for this and is just as likely they predate him. No boat burials are found directly related to the Bent, Red, or Meidum pyramids either...."
A puzzling gap in the Tradition, no doubt.....my little Theory is that each Pyramid has at least one Boat Pit, (w/ boat), but current evidence doesn't support this to well. (Maybe we haven't found them yet.) And relates to above.
Quoting Lee, "......Personally, I do not believe the great pyramids were built by one pharaoh for one pharaoh nor that construction was started and completed within each pharaoh's reign. Assuming the southern pits were built during the beginnings of construction, by the time it was completed, perhaps a century or two later, not to mention however long after Khufu's death during during Djedefre's reign, these pits may have merely served as a place of opportunity for Djedefre to bury boats...."
I do believe each pyramid was built for one pharaoh, (respectfully disagree). As you mentioned, the boat pits may have had a different purpose before/during Pyramid construction, and I believe they did. IMO, the adjacent pits were covered shortly after G1's completion. (Also, I think the G1 enclosure wall did extend over most, if not all, of the Boat Pit at one time-researching.....)
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."