well my spotted amp hit about a foot and a half tall. since i dont have room for building a larger chamber at the moment and the amp has basals and some side shoots are erruppting i chopped the top 14 inches of so of the vine, trimmed all but leaves off, slit the vine about an inch or so and stuck it in a deep pot of LFS.
also chopped up my veitchii as it was looking ragged from a couple moves to different spots and it had a basal at soil level. foot and a half of vine into 3 cuttings. hopefully this one will look nicer next year as it wont be moved.