(Can't reply directly to Velocipedestrian so I'm doing so here)
My wife had one of those Thule racks that we used for a road tour. Once I got it tight enough it held up well, but I _really_ had to crank down on those fasteners - far more that I liked on a carbon fork. It had slipped down after a few hours and I tightened it more, then later in the day after it slipped again I really had to reef on it (I think I improvised a cheater bar to use with my full size allen wrench to get more leverage). After that it held up for a couple of weeks of touring with no issue, and it worked well. But I didn't like how hard I had to crank on those straps to get it to hold, and that was a road tour. I wouldn't personally trust them on a gravel/dirt based trip for that reason.
May 4, 2022, 10:02 a.m. - khai
(Can't reply directly to Velocipedestrian so I'm doing so here) My wife had one of those Thule racks that we used for a road tour. Once I got it tight enough it held up well, but I _really_ had to crank down on those fasteners - far more that I liked on a carbon fork. It had slipped down after a few hours and I tightened it more, then later in the day after it slipped again I really had to reef on it (I think I improvised a cheater bar to use with my full size allen wrench to get more leverage). After that it held up for a couple of weeks of touring with no issue, and it worked well. But I didn't like how hard I had to crank on those straps to get it to hold, and that was a road tour. I wouldn't personally trust them on a gravel/dirt based trip for that reason.