mcthommo,
Good tips posted by Ted above.
I play all of my splash shots with a slightly fast tempo (.24 or so) and aim to the right of the target to account for it. I never try to hit the .25 tempo for 2 reasons:
1. Because you are taking the club back slowly to be more precise with distance control, you will naturally have a tempo that is too fast if you swing down normally.
2. If you are trying to hit the .25 tempo, but accidentally hit a splash shot with a slow tempo (.26 or more), the results are worse and tend to leave the ball short in the bunker. It can be useful for a few situations but for the most part I'll always hit splash with a slightly fast tempo. Better to avoid the duff and the 3 second rule altogether.
Yes you will get more roll out when swinging this way, but with a little practice you will get used to it. Try to find your sweet spot of aiming away from the flag to account for the ball going left.
Also try to find 3 or 4 animation clues at different points of the swing to give you a reference for distances. Then you can just visually adjust your backswing to fill in the gaps.
This is the same approach I use for all pitch shots as well (Aim right of the flag and hit it with a slightly faster tempo)