1. You’re tall enough. Standing anal, don’t lean over, let the guy put you into a standing full Nelson (without pushing your head down), this will hold you up and keep your back arched! Can vary a bit and put hands on top of your butt elbows pointed back to create a holding space where the guy can hook inside your elbows, still holding you up.
2. On the bed, if you can do a full split, you can switch between full split and doggie. The position is very fun if you are ok with having your hair pulled.
3. Best is the woodman. Lay on your stomach, point your butt up, maybe a pillow under hips and spread your legs. Guy mounts with knees outside of your knees, and feet inside of your feet, so you are pinned in position by his shins.
4. Lay on your side, or in between side and stomach, keep bed side leg straight, pull free leg up, knee towards your chest. Guy enters from side, straddling your straight leg, then pinch grabs your knee between his feet, so that he can pull you down while he thrusts up! A little bit like scissors, but with more domination. Good times.