Kent,
all the bouncing around mine do is in the back of the truck on my way into and out of the woods. Might be worse bouncing if I'm heading home from San Diego on the 5, that freeway is getting really bad in spots. Seems worse than the road into our javelina spot in 18B.
And I can sure see those hinges being a problem after 1000 fish have been tossed into them.
Geno