A comfortable variation on your usual legs up sex position. Try The Splitter and see how hitting her deep spot feels so. damn. good.
At first, this starts as the classic kneeling missionary position – woman on her back and the man on top. However the trick is for her to lift one leg and put it on his shoulder. This gives her something to push against as he thrusts, while aligning them perfectly so his cock slides from her G-Spot to her A-Spot.