As you can see I have a fair amount of wedge to my Lebaron-Bonney top.
The car itself has a pretty good dago.



The top flaps.

Still hanging in there about 11 years and 35,000 miles down the road.

Not a whole lot you can do about it and in my car windwing angle doesn't make any difference.

Some kind of flat reinforcement on the top between the upper outside layer and a new inside layer - sorta envelope-like - and tied into the middle bow might make a difference.
One thing I have noticed is that the middle bow moves around a lot at speed and bracing it to the back bow or both front and back may help.

I haven't noticed a decrease in top flapping with the back window open, but I think it might.
Just have to pay attention once the weather warms up.

41* F this morning on the way to donut run.
25 * the three weeks prior.

Gonna have to turn the heater on if it gets any colder.

These tops were made for a car that cruises 45 mph or so, so runnin 70-75 mph - legal here in Sunny Arizona - is gonna make em flop.

You'll get used to it....