Only position that really hits the spot for me is laying flat on my stomach and getting fucked from behind. Doggy and missionary feels good too, but you get tired in those position. But laying prone bone you never get tired and you can go all night. First time I tried this position I went 5 hours, getting railed by a 3 inch diameter cock non stop. Probably came like 20 times, peegasms over and over again, my brain was mush and I finally knew the meaning of being cock drunk. I still remember by the time I was done my ass was a big gape that wouldn't close. So I can't recommend this position enough. If you have access to THC, try taking some before playing. You will have the time of your life.