There is more to it than hoses bursting.
To safely use a loader as a manlift you must have a self-levelling setup. This is because it is required by law (at least in this country)to disable the dump lever in case it gets hit with a person up in the air.
Look, people do it all the time and get away with it but there is always that chance that something will go wrong. You might not lower the bucket one time before moving and flip the tractor.
That's my tuppence anyway
You really need them on all 4 cylinders as any of the 4 fail and it could be catastrophic.
If i was setting up a FEL as a man lift I would install velocity fuses at all 4 cylinder ports and check valves like Kenny said and flow reducers with manual override lockouts on the dump output and inputs of the FEL valve.... Wait... just go rent a Man lift much cheaper and safer!
As an old safety guy NIW gave you sage advice, I have seen a lot of ,shall we say inventive ideas on job sites,like what you are thinking about. All of them look good on paper, but not so much in the light of day