This latest change by WGT has left me scratching my head for the following reason...
Why in holy hades would I want to spend 30 credits to slow the meter on an "important" shot if that can only be used in PRACTICE mode ???
My suggestion would be this. If you are going to offer a feature like this then offer it on non practice rounds as well, but only for a finite number of times. So if you are playing a scored round or ranked round in match or stroke play, maybe you can use this feature, let's say 1 time for 9 holes and 2 times for 18 holes.
Just food for thought....