Abstract: Several methods, devices and systems that provide features for improved activity sport sessions are described. In one embodiment, a multifunctional device includes an inertial measurement unit to sense movements of an activity device (e.g., a board, a surfboard, a windsurfing board, etc.) during an activity sport session and to sense at least one input for indicating a target location during the activity sport session. The device also includes at least one processing unit coupled to the inertial measurement unit. The at least one processing unit is configured to designate a target location in response to the inertial measurement unit sensing an input for indicating the target location, to record the target location, to determine a current location of the activity device, and to compare the current location and the target location. In one example, the at least one processing unit is further configured to generate a directional output if the target location and current location are different.