How coincidental that one of my customers today was saying last week he went in for a back operation and he had some serious pain over the last few days recovering.

Anyway i needed to get my 45kg mowers onto my tray top which is around 1100 off the ground and it needed to come off and on 8 times 16 total and i wasn't going to lift it every time.I used 2 timber ramps 2400 long x 25cm wide with 2 bent hooks on the end so they didn't slip off the edge.
Make it 3m long if you got room and you'll be trouble free,just pine it's cheap and easy to handle