Here is an idea with a few unusual suspects that I have brought together just for the occasion. Enjoy this one soon, I know it really fills the bill on the aft deck this time of year.
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1 1/2 oz. Mount Gay Black Barrel Rum
1 oz. Campari
1 oz. Dolin Dry Vermouth
1/2 oz. Luxardo Maraschino Liqueur
1/2 oz. Lemon Juice
1/2 oz. Agave Nectar
Place all ingredients in a shake filled with ice and shake until thoroughly chilled and strain into tumbler filled with fresh ice and garnish as you see fit.