One great thing you should look out for is the word hike boosters. To be sincere, these boosters are way better than in some games, and to add, they are very helpful. You are given a hint and a certain amount of coins every day. Word Hike Thunder Booster reveals the entire row vertically or horizontally and it costs 330 coins. It is advisable to select the vertical row since this will help you find letters of unsolved words within that level.
You have more Boosters to choose from: