Historical clue formulations

• One propelling a raft, maybe — 2020-09-08
• Gondolier, maybe — 2019-08-08
• Punt propeller, e.g. — 2016-03-11
• Gondolier, e.g. — 2008-08-08
• Ferryman — 1996-04-19
• Gondola guide — 1994-04-13