My 45m tower carrying Optibeam monoband stacks and 3 element on 80 got damaged in the storm at the end of March 2015. Seems to be due to a turnbuckle failure which had unwound itself.
Painful experience from not using safety loops on turnbuckles!
See my 15m collinear stack here:
It has ca 24.5 dbi gain on 4 degrees angle and 29 degrees 3db beamwidth:)
CU in contests!