Quote Originally Posted by k_c_r
If you were to replace that with Nylon (especially if you go to 20mm Nylon like the wedge triangles - there's definitely enough weight for it) you wouldn't suffer that problem to the same degree. I'm not saying that it would eradicate the problem completely but the likelihood of a repeat scenario would be greatly reduced.

Out of interest, did any of the wedge triangles take hits? How did they hold up if they did?
Multiple impacts and they've all survived with only their front edges smashed from the lower bolt on. By comparison, The bolts holding them there were bent beyond retrieve. The broken poly pro bulkhead still has it's wedge and bolt intact!