Bill,
Actually I have........... in 04 We had two back to back hurricanes, The other Marina I just moved from was the only survivor on the river. This dock along with 5 other docks all broke loose and headed down stream. There wer probably over a hundred boats loose and a good thirty sunk. At the time I didn't own a boat but was on my brother in laws boat helping push in coming boats and debri away from his houseboat. These are all new docks from 05. Its something to see, a twenty foot section of docks with the boats still tied to them heading down the Ohio River. Luckily a tow boat operrator and crew caught many and tied them off along the banks, but the ones who got away went over the Montgomery Lock and dam.
It was quite a weekend and then the following week the same catastophe happened on the Allegheny nort of PIT. btw the post were pushed over from the strain and weight of the docks.
Scratch my back with a hacksaw..........................