and somehow thats easier than a piece of plastic that goes in and works???
drill a bolt hole (or run to tractor body/frame or loader frame therby blocking right side egress....) , put something with 2 hook onto it, bend the hooks to work, attach and remove from lift lever as needed is not easier than this setup.
and you float when tilling ( I got about 40 years experience including large tractors with tillers) so when you come to an end of a row you can maintain same depth when front end rises to go onto headlands. w/o float (on larger tractors) tiller locked into position and the front rising will drive the tiller down deeper than rest of row. On smaller tractors (such as the GC series) when not in float tiller will rise up when front tires rise then when rear tires hit headlands tiller sitting HIGHER (it will only lower to the last set position) than rest of row for approx 1.5 to 2 feet (depends on distance from rear tires to tines) and also cause a depth mismatch.