Ok. Things you should know:
1) this hose has a larger diameter at the bottom than the top
2) put the bottom on first, slip clamps over the top and then push the top of hose up onto pipe
3) I found it easier with drain hose unclamped and pulled out to make room to maneuver
Finally, feel free to prove me wrong and put the top of hose on first - let me know if you succeeded and how long it took!