The wheelbarow is possible in real life. I know because I have done it. The woman has to be in good shape, and you have to be careful not to slip out, because the man can get hurt bad. If her arms get tired she can either raise to sitting on the mans thighs, or lower herself to restng on her forearms. In that position clitoral stimulation is increased. If you are in good shape this is a fun position. If you are too weak you could get hurt.