I am probably missing something, but I am only able to collect 5 coins per hour by selecting the +5 selection.  How many coins are you collecting in the 4 hour wait time?  If it is more than me could you explain the way to do it.  Thank you.

  When you achieve enough coins for a particular power up, you just click on that power up.  If you have enough coins, you can use another power up in that same game, or they will be still available in your next game.

  Here is a tip that I didn't realize until playing this game for a while.  On the playing field, if you click on the top of a stack, most of the time it will tell you how many are in that stack color.  You need to achieve 10 in a stack to eliminate ...

  What I do is click on the Free! coin image.  Every hour it will reset and allow you to get 5 more coins if you click on the +5 selection. 

 I am sorry I meant to say 60 coins for the hammer.  100 for the hand to insert the selection.  35 for a new 3 stack selection.