Mine points straight up when very hard. Almost touching my belly. With a banana curve.
Doggy isn't my wifes favorite position. She says that it puts too much pressure on her rectum. If we do doggy I have to be very slow at first. No quick jabs etc. Also I can't do doggy when I'm really hard. Pulling my cock down to 90 deg from my body doesn't feel that great. I get off fast from doggy though.
We find missionary the best. My head rubbing on her g spot makes her feel good! Also scissor position works great.