BTW, Val.. How ever did they rescue your boat? Lot's of cranes and a new cradle perhaps? ...and why were they moving it with the mast up??
They brought in a 35 tonne Travel Lift, removed the forestay, and put the slings under the cradle itself. The accident happened because some idiot forgot to put the retaining bar between the two "tines" of the trailer "fork", on which the cradle rides. They took a corner, and the variable speed of the trailer wheels caused the "tines" to spread, and "boom!".
No, really. The sound was "boom!" We thought we would crap ourselves. The cradle itself was brand-new, and yes, I am
endorsing their product. The only damage was that the pad screws sheared underneath that dented plate. The dent itself was surveyed and essentially popped out of its own accord. No structural damage evident other than the cracked paint.
As for having the mast up, Toronto's Outer Harbour Marina is one of the few places where this is allowed over the winter here. We only went there because we bought this boat in summer 2006, and my club couldn't make room for it that winter. In the winter just finished, I sat at the end of a row with the other big boats, and with my mast in a rack. We launch at my club with slings beneath a square frame beneath a giant crane hook (100 tons or something), and there is no way to keep a mast up unless you have a Travel Lift launch.
If so, you launch into a deep slip, back the boat off the cradle, and then the Travel Lift raises the empty cradle back onto a tractor trailer for storage.