The worst thing is seeing someone 'testing the oleo' in the preflight walk around by manipulating the spinner on a prop up and down. Doesn't take much to start a crack against the fixing screws, they're not designed for that load.
On my PPL (C150/C152) I was initially taught that if I needed to move the nosewheel out of a rut before start, or position it onto a parking 'slab' in the grass when I'd invariably just missed it, I could (with brakes off, mags off, etc etc) lean over the fuselage at the very FRONT of the tail, (where the tail meets the fuselage), spreading the load with body and arm, and just see-saw the front wheel into the air and manouevre it back onto the slab. I've never questioned this before, as it 'went in' so early on in my flying. Any problems with that, C150 structural experts?