For any sceptics about the value of poly glues:
I built a tonneau cover for the pickup two years ago using this stuff. (Grizzly Glue) There was no stuctural hardware used except staples and tacks to hold it together while the glue dried and some clamps where it was possible. The entire frame was made from red cedar, and the cross members are arched about 3/4 inch but only 3/4 square where they are notched into the sides. It's covered with one layer of Fourdrinere fabric from a paper machine and waterproofed.
This thing has been blown off the truck twice when I forgot to tie down the back end.
It's been on and off too many times to count, dropped, walked on by cats and dogs....but no kids
....had a foot of super-saturated wet snow on it, but has NEVER needed any repair.
All this and red cedar is a very hard wood to glue successfully.
I built a tonneau cover for the pickup two years ago using this stuff. (Grizzly Glue) There was no stuctural hardware used except staples and tacks to hold it together while the glue dried and some clamps where it was possible. The entire frame was made from red cedar, and the cross members are arched about 3/4 inch but only 3/4 square where they are notched into the sides. It's covered with one layer of Fourdrinere fabric from a paper machine and waterproofed.
This thing has been blown off the truck twice when I forgot to tie down the back end.

All this and red cedar is a very hard wood to glue successfully.