In the case I mensioned, I believe it occured as they were setting the canoe on the bars, before adjusting it to final position.
In this case, the canoe was loaned to folks who should have known better, but it came back damaged.
My rack perference is good old fashioned 2x4's, covered with carpet. /QUOTE]
Dan,
That is a story that was concocted by someone that borrowed a canoe and dinged it up. I have put my boats up on my racks hundreds of times, usually by myself and I have never done that. I almost always place the rails on the cross bars and then slide or lift them into position or slide the gunwale brackets into position. The rails slide on the crossbars without damage.
To damage the rail they either dropped the canoe or tied it down without getting it into the bracket. There is no other way....
With respect to your preferred racks, I have also used these and I agree that they offer great protection for canoes. That said, they are only good for that one purpose. We also use our racks for our other hobbies.