Originally Posted by koala logs

Same for me but additionally, I lift my butt approx 1 cm off the saddle for some butt relief. Putting all my weight on one leg that is extended all the way down, alternate legs, to stretch each leg or to avoid ground strike when turning while still gripping the top tube with the knee and thigh. It's not the most aero position to descend but quite comfortable, relieves the butt and stretches the legs (mostly for butt relief). Your butt is still in a position over the saddle like when you're sat down so it doesn't compromise braking and stability.

You might think it might have issues with bumps with one leg extended straight and all weight on it. I didn't have such problem, perhaps, the calf muscle is soaking the bumps like a spring or the 35 tires inflated to only 45 psi.