I'm not someone that really pushes the madstad, but as for the strength, they're just fine. 95% of my driving is highway commute, seriously I have a flat spot on my rear tire! So 250+ miles a week at 80 mph and the only thing I ever see is every couple weeks I need to adjust a few degrees of rake on my W/S due to the adjustment knobs slipping slightly. To be expected though, and not a result of insufficient material thickness.
Sheet metal running perpendicular to the windshield and wind force is very very strong, you don't need much thickness. If it were parallel to the wind force you'd need to thicken it up substantially. Just like ceiling and floor beams in a home....they're perpendicular to the floor, the thin edge running vertical. If you turned those flat you'd have serious problems. Exponentially stronger when perpendicular.
[FONT="Arial Black"]2007 DL1000 [/FONT]
[SIZE="1"]Givi Windshield, MadStad, Givi Crash bars, Alum Skid plate, Amplirider, USB, headlight relays, 1 headlight kill switch, 16T - 41T, Yosh'd ECM, Grip Puppies, Givi V46, tank panniers & tank bag, Murphs fork brace, custom seat, zumo.[/SIZE]