Here’s one example. The penetrative partner need not be completely doubled over the receiver; if the giver can manage on their knees I like that better, with my own legs vertical versus at an angle. It’s typically easier on them and we can develop rhythm better, (it becomes less like they’re having to do pushups- bleh) plus I can put my feet down and it still works. One leg up is great too. Either way I can touch their chest and see the action. I like this position whether I’m giving or receiving, it’s so easy to control speed! I also like being on my stomach; gets my g-spot every time!