I'm looking into the idea of assembling a small crane for lifting and moving heavy timbers, especially since I have just learned of a barn going down reportedly with massive 65' white oak timbers, with exceptionally large cross sections.

I don't really want a simple gyn pole type structure, something more along the lines of sheerlegs, derricks, or a rudimentary crane, even looking into the possibility of rigging up a late Medieval type pivoting crane, which would be extremely advantageous when working alone.

Which raises the question, Jay is your 'Scaffold Crane' system in fact a modular lifting Derrick? A Derrick being a tower assembly for the purpose of moving objects vertically, but incapable of horizontal movement.