Found this on the US bushcraft site, look like a good idea http://bushcraftusa.com/forum/showthread.php/55865-DIY-Table



I wonder if you had 4 holes, 2 at each end instead of the 3 they have could you do away with the poles? So the cord out the holes furthest from the tree went up the tree at quite a steep angle?
Or perhaps a smaller prop that goes to the trunk at an angle which is then tied in place?
The way in which I put the table together however is a bit unusual - I wanted light weight and multipurpose so I chose corrugated plastic as the material to use - wired together with 18 gauge steel wire to form the attachment points for the line tied around the tree and the prop stick. This was easy to do with the corrugated plastic since the wire fits very nicely into the corrugation channels. A single sheet would have probably worked ok but I sandwiched two sheets together for more support. As for multipurpose the main thought that I had was that this table could also be a frame sheet in a frameless pack or a homemade pack. A secondary usage is that the plastic could also serve as a cutting board provided the user was not too heavy handed.
The two sheets were wired together on each side and in the center as can hopefully be seen in the pictures.
The table plus lines weighs 4.51 ounces or 128 grams - not as light as I was hoping for but ...
The size of the surface is approximately 14x7 inches or 36x18 cm
The table does support a US gallon of water (my test case) - approx. 8.35 lb or 3.79 kg but I found it best to put it closer to the tree for reasons of stability - the surface tends to twist the closer the heavy weight is to the end with the prop stick.
The next test I will try gluing the sheets together to get better stability out toward the prop stick attachment point.