And I also drain from the bottom of water pump, not the hose.
What a surprise, it's a pain in the ass to loose water, and for that cause, 1 in 3.000.000
The hoses that were my the bike when i bought it in 2009, were ok, but one has a little crack, and i change all of it.
Waiting for the original parts, i've found here, the same hoses, with the sames shapes....amazing.
So i used the ones i bought here, until today, that they were ok, but i'm dismantling all the stuff, so i decided to install the original ones.
I guess if i don't have an accident, they will last for ever ( for ever me, ja! )