You've done the quest and earnt the right to use the cannon, and if you're already training with the cannon before the people that complain then they should be the ones hopping.
Finally, I get sick off people saying i've wasted money on a D axe that's only "0.3%" faster. The ignorance goes on when they clearly have not got as much time wcing as me, so I thank you for your experiment to prove that the D axe is infact faster.