Thanks for your comments and suggestions regarding my experience with caning.
As some of you noted, when Evan is strapped to our spanking bench, his legs are well apart. This provides me with a lovely view of his penis and balls, but it also means that unless I am very confident in my aim, the cane isn't a very safe instrument. That is, I can't swing as hard as I want on each stroke, for fear that I might strike Evan's balls. Consequently, I prefer a paddle or a strap when Evan is strapped to our bench, because I have much better control of these implements. I can therefore swing fully with them.
Following much of your advice, I will practice my caning on Evan, with him bent over, off the bench.
Here are a few photos of Evan receiving the strap following the caning that he received earlier. I can swing the strap more fully than the cane, and consequently, Evan reports that it hurts a great deal more. This is a heavy three-tailed tawse, which is satisfying to swing. It makes lovely ripples on Evan's bottom:
In the photo above, you can still see that Evan has the traces of his earlier erection. But by the next couple of strokes, his penis has withdrawn fully, much to my satisfaction.
Here is a photo of an impact, followed by the ripples immediately after:
Evan definitely felt that one.
More later. Please keep the comments and discussion going.