In reply to Ed Brighteldman:
I thug it Ed. Left in the slot, fingers jammed in so I can lever on it and I go right up with my right to a far edge, set right foot on good hold and using body tension cross through with my left to another edge, you can then either go straight for a jug (with your right) next to the bolt, or use an intermediate to bounce up to it.
I just hope it is cool for you, it was humid and soapy last Sunday.