I can't help on a Ford hoe, this is mainly for Rusty -
The travel position on a Case hoe is accomplished by a combination of geometry, inertia and a QUICK wrist
The boom pivot joint cylinder (2 of 'em on older hoes like mine) PULLS in order to raise the boom, until the boom gets ALMOST all the way up - at that point, the linkage goes "over center" - if you have enough momentum at that point, AND you're quick enough to then PUSH on the boom lever, the momentum continues upward travel
BECAUSE the boom has passed the over center point, at which time a spring loaded hook (located MAINLY inside the main pivot casting) has engaged the "travel" pin (ALSO located inside the main pivot casting).
The spring loaded hook has a "release" lever, so in order to return to dig you GENTLY push on the boom lever, and as soon as the boom starts to travel further UP, you move that release lever which lifts the hook out of the way, then you PULL the boom lever (which actually LOWERS the boom til it moves past the travel hook - then gravity takes over, and the boom stays UP (but NOT far enough up to re-latch the boom).
The "inertia" part teaches you fairly quickly to NOT bother to try this with the engine at idle - the boom will NEVER have enough momentum to reach that over center position, so if the boom UP travel isn't fast enough, PUSHING on the boom lever will only cause it to go back to DIG position.
Wow, I'd almost forgotten how hard that was to explain - good thing actually DOING it gets to be a habit fairly soon
... Steve