I found using my mouth and hand works the best, since I can't deep throat either... yet...

I start by just using my mouth, taking of much of him in as I can, while my hand fondles his balls and perinium. Then I start to slide my hand over his cock, my hand in the shape of an "O." When my hand slides down, I slip my mouth over the head and give it a quick swirl, then bring my hand back over the top. As I bring my hand up, I twist it, which is what he says drives him wild. With my free hand, I caress his anus (he has yet to let my finger in, even though we both think he would like it, he's a little homophobic), so I just lightly caress the opening, which drives him crazy as well. I keep pumping, gradually increasing, and as he cums, I pump my hand as hard as I can over his shaft. He shoots over his head sometimes (he's 6'1" with a long torso). If anyone else uses this, lemme know what you think.