Electric skateboards are frequently fast, but nimble? Not so much -- even Boosted's Mini boards are meant more for cruising that bobbing and weaving. Riptide might have a solution. It just launched the R1 Black, a variant on the R1 meant to deliver surfboard-like carving. A Surf Adapter from Waterborne Skateboards gives it turning performance about three times better than standard R1 models, and shouldn't sacrifice stability in the process -- you shouldn't have trouble making an evasive maneuver at high speed.