"As I sweep the blade I try to concentrate on maintaining the correct paddle blade angle and keeping the sweeping blade as close to the water surface as possible by maintaining good extension of the arm and torso on the side of the sweeping blade. "
I find your post very helpful. The above quote is the only part not so. I don’t have a sense of the correct blade angle during the sweep. Only at the end do I realize if it was wrong, and then it is too late. So I don’t know how to ‘concentrate’ on maintaining the angle.
I think maintaining the correct blade angle relative to the surface requires a smooth, progressive rolling of the wrists. Either a neutral angle or a slight climbing angle will work. What you don’t want is a diving angle that will cause the blade to submarine.
You can make sure your blade is correctly angled at the start by checking it before you capsize. And you can practice rolling in a clear pool with googles or a dive mask that allow you to actually see your blade as you sweep. An observer can also tell you if you are doing it right.
Of course, in practice when you have to roll you won’t have the luxury of carefully setting your blade angle before you capsize, you usually won’t be able to see your blade as you sweep, or have an observer on hand. Moreover, your paddle might have gotten knocked a bit loose in your grip as you go over. So this all has to become muscle memory through practice.
Fortunately, most paddle blades are ovalized to allow you to orient the blade faces by feel without looking. So a good thing to practice is letting loose of the paddle, regrasping it, and reorienting the blades before you roll up.