Two question: Look pedal float and pedaling out of the saddle

[OakLeaf]

I just came across this stretch which shows the modification I like to add to the kneeling hip flexor stretch I posted above. It gets your torso involved which helps to address the psoas since it attaches to the vertebae of the lumbar spine.

That's pretty much the same as the one my PT has me doing, except I do it standing with a foot on a step stool or bench.

I've read and heard so much about knee injuries in Pigeon pose - although [touch wood] it doesn't seem to stress my knees, what are your thoughts on that?