I prefer straight leg. I sit on the toilet and prop my leg up on the bathtub, resting my heel on the side. If I'm shooting my right quad, I grab my quad with my left hand and sort of pinch it, pulling a handfull of thigh up. Then with my right hand I stick the needle in the side of the quad where I pulled it up. I don't go in from the top. It sounds strange, but I found this way to cause the least discomfort, which is tough to find when you have scar tissue in your thighs like I do