thanks for the advise everyone. i just finished it an hour ago.
yeah spaceymonkey, it has to be transportable around the bay and fit it my van when pulled apart.
its pretty much as i descibed above. and yeah, i cut the tops of the "t" section. its double pipe width too so its stable as all hell, just gotta hope it sticks into the sand now

. i also cut the bottom of the pipe on angles hopefully making it easier to stab in the ground. glued the t section underneath the top section and using the blue crap and put stainless steel screws into it, and the legs are goin to be detachable so we can make make longer/shorter ones for it. sheppo3930, may need your engineering advise if it doesnt stick into the sand tommorow on our test run. wanted to avoid "a framing it so there were no obstacles to catch a falling body on