From High Roller Guides

Rock the Boat is a classic slot machine dedicated to Rock and Las Vegas legend Elvis Presley developed by Microgaming. Get a quick blast from an Elvis rock tune Jail House Rock every time you hit a winning combination. Other symbols are the standard BAR as well as a lighthouse and a Guitar. No extra value in the Jackpot for playing 2 coins.

Wild Symbol: Elvis is a wild symbol and plays a great Elvis speech and song effect when you hit!

Multiplier Symbol: A single Elvis symbol doubles the payout whilst two Elvis symbols quadruple the payout of any combination they complete.

[edit] Payout Table

Combination	Coin 1	Coin 2
3 Elvis symbols	800	1,600
3 Lighthouse symbols	100	200
3 3-Bar symbols	50	100
3 2-Bar symbols	25	50
3 Guitar symbols	20	40
3 1-Bar symbols	10	20
2 Guitar symbols	5	10
Any 3 Bar symbols	3	6
1 Guitar symbol	2	4

Examples: If you play with one coin and 3 Guitar symbols appear on the screen you get 20 credits. If you play with two coins and 3 3 Bar symbols appear on the screen you get 100 credits. If you play with two coins and 3 Elvis symbols appear on the screen you win the maximum payout of 1600 coins.