Implement at Henley is a job position that requires the use of an OAR. The job involves using the OAR to propel a boat through the water, and it is a skill that requires strength and coordination. The term 'implement at Henley' is derived from the name of the town in England where the annual Henley Royal Regatta takes place, which is a rowing competition. The OAR is the implement used to row the boat, and thus the term 'implement at Henley' was created to refer to the job of rowing a boat.