This shot, like most of the others you have posted lately, is a shot detailed in Hennings Pro Book. Based on your post you practice it about the way Bob suggests, playing the same route with different weights to different end positions. Keep it up !
I practice this shot a lot, although I am not a top player. Normally I will play it with the object ball on the center line of the table, but knowing the limits when it is above or below the hole is important too. There are also a variety of other routes from the same side pocket pot that I practice :
- top (or top left) to follow into the long rail-shortrail-longrail as you posted
- top-right (inside) to follow into the long rail, check spin down to the short rail, check spin back straight up table (this shot goes between center and the pot side pocket)
- centerball down to the short rail and straight back uptable (plus slight right or left to bring it back uptable at an angle)
- center-right into the short rail, spin to the long rail (on the same side as the pot), back to the center
- low-left into the short rail, spin to the long rail (opposite side as pot), back to the center
- loads-of-draw back to the opposite long rail then to the short rail (right side as needed, with this you can go three rails to the center in the opposite direction to what you diagram)
That shot has loads of shape possibilities. It's one of my favorites to practice in case you can't tell

And it has served me well as I find getting the perfect angle is often beyond my capabilities, hell even getting on the right side of the ball can be tough for me, and having a choice of routes out of my self-created mess is essential.
Dave
PS, the table showed up fine in the post, well done. That shot you posted could be done with a dead center hit as indicated, but a little top-left could be used to make it go on a wider path. Do you know that you can adjust the cue ball hit point on these WEI diagrams ? Just drag the balck dot around the cueball to the desired location. I think that many use the WEI table to show routes and set-ups, but do not bother to indicate the hit on the cue ball. Anyway, I thought I'd throw that out, although as I said in this instance the hit could be dead center.