Leather farming is horrible

[Neoyoshi]

Honestly, the only way I stay sane in terms of collecting leather is just to send my combat retainers out to gather the skins for me. :/

Yep. The drop rates for monster drops become waaaay too low once you go over-level to keep the rate of receiving them reliable, so retainers are the way to go with monster drops on the lower level stuff.

I have 4 combat retainers for this very reason.