We handpumped from drums to fuel the tugs (usually Cessna 150 taildraggers) and IIRC the truck-based winches for Balaklava Gliding Club at Whitwarta Airfield in SA late 1970s/early 80s. Kept you fit. No fun on a 40+ day though. We'd take turns. Took about 12-15 minutes to put enough into a 150.