1. Get Scramble With Friends (Obviously)
2. Download iFile from Cydia
3. Open iFile
4. Click on Applications>Scramble>ScrambleWithFriendsPaid.app (or free) >GameConstants
5. Click "Property List Viewer

Here is really were your preferences come into play.

If you want your coins to never go way, change "EnergyRegenDelay" to 0

You can change the value of the letters to make your score outrageous by clicking on the "LetterValues" and changing them accordingly.

You can change the amount of Double Words/Triple Letter/etc here too.

6. Now click done.
7. Type in the search bar "Boosts.plist"
8. Open Boosts.plist

There will be Boost - 0/1/2
Boost 0 = Freeze
Boost 1 = Inspiration
Boost 2 = Scramble

You can change the amount of these you receive by changing the "ID" number. (ex. Inspiration ID = 1000)