On Mar 5, 3:35*pm, Winston wrote:
Jim Wilkins wrote:
...This pulls stumps and boulders for me:
[tripod]

Simple & portable. *I like it.
--Winston

Simple and portable was the plan. The key was thinking up a way to
join the posts with a flexible pinned joint that didn't reduce their
buckling resistance very much. The pipe is too slippery for the rope
lashing that works on timbers.