How do you unlock wild west in wii carnival games mini golf

If you are playing single against Barker you have to beat him. Collect 3 gold coins from him total. Each course has 3 types of holes.. If you move around each course and each hole a coin will appear with his hat and mustache you may see 2 gold and 1 silver. That silver means u need to beat him at the specific hole.. You gather 3 gold barker coins, you will continue to advance.. Kinda tricky. Some courses you can beat him twice and unlock a course but eventually there might be that last course that won't unlock so you need to move around over each course and hole until you find silver coin and beat barker