Abstract: A peripheral mounting system for a drone has a cylindrical receptacle configured to be mounted to the bottom of a drone, an attachment for engaging with the receptacle, the attachment having a dome-shaped capsule configured to retain a peripheral, the edge of the capsule defining a base and a fastener at the base of the capsule, for sealingly engaging with the receptacle to form a watertight seal. The receptacle may be a threaded collar affixed to the bottom of the drone, wherein the fastener is threaded into the receptacle. In an embodiment, the peripheral is a sonar unit to locate fish and a wireless unit is configured to transmit fish location to a remote user. In another embodiment the peripheral comprises a grip configured to carry a fishing line to a remote location.