@ProfNCognito instead of a cable attachment at the top why not make it a connector, have the crane on the boat go winch -> cable connector -> connector. This way you can auto attach to the bobber of the crab cage :)
Instead of doing the cable connector to pick up to buoy use one of the electric like "magnet" connectors then you could have a fully remote controlled crane, you could also have it the electric connector on a winch as well for up and down, that way you wouldn't have to do so much manual work.
рыбалка зимой, крабы летом, вот это прогресс. ждать окон под разные углы бесполезно и прочих блоков. разработчики слоупоки. спавн в ловушке крабов не спортивно, рыбу ловить надо.