I don't break boats cuz I'm to big a wussie...
got scared after being pinned to a tree.
But I do see alot of broken boats.
Even saw a couple of broken Jackson's that were not blue.
The EZG problem had nothing to do with the plastic it was a moulding issue not getting enough material in under the cockpit rim, some of the new boats even had holes in them when they were unwrapped.
It seem to me that its not bad plastic that breaks a boat but bad lines. (sharp rocks)
Now that the accountants rule the kayak mfg's you will see oil canning if you paddle a boat. Even Jacksons oil can if you splat enough rocks.