Instead of lackadaisically pedaling, Trikke riders bob to and fro as they roll down sun-drenched streets. This side-to-side weaving motion, improbably, is exactly the thing that propels them forward. Such is the design of the Trikke, a three-wheeled device with pivoting beams connected to two footholds, which riders drive using a process referred to as "conservation of angular momentum." At Hollywood Beach Trikke, a team of Trikke-certified experts teach their customers how to master this technique through group rides and tours. Each tour leads participants up and down the Hollywood Beach boardwalk, where riders can take in the scenery or scour the waters for messages-in-bottles from their sailor paramour. The store also rents out fat-wheeled bikes for riding on sand, spring-powered kangaroo jump boots, and other non-traditional forms of transportation, as well as regular and electric bikes. Additionally, in-house technicians perform advanced tune-ups and part-replacements for bikes and Trikkes alike.