Again, to make him understand, you gotta talk to him about it.
Its all about how long you can have the sex.
I see a few you mention work, but maybe a section would help?
First up is a simple mamacitas porno which you can do by lying on your back ready for the missionary position.
Try some of these anal sex positions.
As said before by other people, communication is key when it comes to pleasing each other.
The most important thing to do is simply talk to him about it, so that he understands the situation.
But besides that what is an easy yet fun position that will make is want iaci quote do it again and again.