Tequila Moonrise

3 oz tequila
1 oz light rum
1 oz dark rum
1/2 oz Rose's lime juice
1/2 oz lemon juice
1 tsp sugar
2 oz ale

Combine the tequila, light rum, dark rum, Rose's lime juice, lemon juice and sugar into a cocktail shaker half-filled with ice cubes. Strain into a collins glass almost filled with ice cubes, top with ale, and serve.