When I dreamed about this radio-triggered flash setup for photographing my bunnies, I failed to take into account how much I was relying on the focus assist beam on the flashgun (i.e. the red light on the front that comes on before the flash to help the camera focus). It's no help when it's high up on furniture pointing in a different direction instead of on the top of the camera. This ropey old, secondhand, slow-to-focus 5DMk1 I use now seems to especially need every little bit of help to focus in anything other than broad daylight, plus I had been using the beam to help me aim without looking through the viewfinder, since it effectively paints a temporary red cross-hair on the target. Probably more of a 'cheat' than a 'pro-tip' that one.
Anyway, as always, just a little bit of adjustment needed so luckily I can count on patient bunnies to wait without complaint and...erm....no, of course not, what was I thinking.
I guess but...hey, wasn't there talk of a diet not too long ago?! Cheeky Anouska!