>     I thought it was latched!   Until it opened on the highway.

BTDT!

I was pulling up an on-ramp to an expressway that was much higher than the
road I was on.  Going about 30 moh.  When I reached the top of the ramp,
the very high wind in "The Valley" of South Texas caught the top and
popped, I should say, POPPED!, the top up.  Fortunately, my wife was with
me so I had to act cool, like that was normal.  Needless to say, I was a
little startled too.

We had left the campsite a few miles back.  When I put the top down, Leigh
usually goes around to be sure I got all the canvas pulled in.  She was off
doing something else so I went around and looked myself.  Must have got
distracted and forgot to pull the latch down until it clicks.  I will not
forget that again...