There are numerous rum-based riffs on Sam Ross' Paper Plane, some served tall with added juices and syrups, but at its simplest (as here), a Paper Boat...
Made this with Mount Gay Black Barrel as the blend involves rums aged 6-10+ years and is aged in both bourbon and charred barrels which I think gave the cocktail a really nice nod to the Paper Plane. Really fantastic. Definitely try this.